Buy a Ferrari 365 GT4 Berlinetta Boxer on documented belt service and a straight mid-engine structure first. About 387 cars were built, so a soft history file is not a discount, and deferred engine-out work is a budget reset.
For this November 5, 2026 guide I read Goodwood Insurance: Ferrari 365 GT4 BB buyer's guide and Car Collector International: Ferrari Boxer-family research. The mechanical cautions below come from those pages; the order of checks and the questions for the seller are my own practical recommendations. Any price figures in those sources are market snapshots, not a valuation of the car in front of you. So, compare it with recent sales of the same specification and condition. I also kept the advice to things you can see, hear or ask for on a viewing day.
Confirm it is a 365 GT4 BB, not a later 512 story
Goodwood separates the 1973-1976 365 GT4 BB with triple light and exhaust clusters from later 512 cars. Car Collector International covers the wider Boxer lineage. Match plates and build records before any premium.
Date the cam belts and related engine-out work
Goodwood says belts need attention about every three years even when the car sits, and that major work is engine-out money. Ask for invoices by date and shop.
Inspect the tubular frame and panel alignment
Goodwood warns spiky handling history can hide crash repairs and wants the tubular frame checked, not just aluminium and fibreglass skins. Gaps that disagree are a pause.
Feel the gated gearbox once warm
Goodwood notes heavy low-speed steering and clutch effort, plus reluctant early shifts until warm. Once hot, crunch-free shifts are the baseline.
Ask about Ferrari Classiche if values matter
Goodwood treats Classiche certification as desirable with ongoing official-parts commitment. Do not invent a mandate; ask what the seller actually holds.
Plan a long enough road test
Listen for flat-12 behaviour and watch temperatures. Our compression and leak-down guide and cold-start test guide help you brief the inspector on a highly strung mid-engine car.
Expect engine-out labour for routine belts
Goodwood says belts need doing about every three years whether the car is driven or not. Ask for dated invoices from a Ferrari specialist before you talk purchase price.
Price colours and two-tone Boxer paint carefully
Goodwood notes that some 1970s colours and two-tone Boxer finishes can command premiums over a default red car. That only holds when the paint story is documented.
Prove the identity before a deposit
Match the chassis number on the 365 GT4 BB to the title, any import papers and the plate on the car before you order a history report. Our VIN verification guide walks through that match, and imported-car report coverage sets expectations for cars that spent years overseas. Older chassis numbers may sit outside modern report databases, so confirm coverage before paying. NMVTIS covers U.S. title history only; it cannot replace foreign records or a physical inspection.
Get the repair scope in writing first
If the belt date or the frame story looks soft, get a Ferrari specialist's written estimate before you talk money. Look, a seller PDF or a folder of photos is a starting document, not independent proof of condition. Ask the inspector for written findings with local estimates, split into safety work and cosmetic wishes. The NYC consumer-agency used-car guidance tells buyers to have an independent mechanic check the car, and our pre-purchase inspection checklist helps you set the scope. Keep a dated note of the drive, the temperatures and any noises, because a seller who disputes your findings later will ask what you saw and when.
We are a licensed CARFAX and AutoCheck reseller, not affiliated with CARFAX, AutoCheck or Experian. Guest reports have been about $5.50, member reports about $4.50 and a two-report bundle about $6.75; confirm the price at checkout because it can change. A report can miss unreported work, so keep the inspection appointment even when the history looks quiet.
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