The Ferrari 412 P was a "customer version" of the famous 330 P3 race car, built for independent teams like NART (0844), Scuderia Filipinetti (0848), Francorchamps (0850), and Maranello Concessionaires (0854). These cars had carburetor engines instead of the factory Lucas fuel injection. Surviving 412 P cars are worth approximately $8 million[clarification needed]at auction.[citation needed] (at Silverstone Classic 2011, 0844s suggested value (by the mechanic working on it) was quoted at UK£12m (US$18m)
There are only 2 cars that were originally built as 412 P's: 0850 and 0854. P3 chassis. P3 Typo Motors except for Carburetors in place of FI. P4 suspension but P3 wheelbase 2412mm vs. 2400mm (P4 and P3/4 0846) 0844 and 0848 were originally P3 Factory Racecars but when Ferrari sold them to customers they removed the Lucas Mechanical Fuel Injection and replaced it with Weber carburetors which reduced their output, something Ferrari wanted to do so that they would win points but not beat the factory cars which were then P3/4 0846 (See Above), P4 0856, P4 0858, and P4 0860.
The P3's and 412 P had the same 4 liter block which is different from the P4 4 liter block and all had P3 not P4 chassis. P3/4 0846 is unique having, after modification by Ferrari for the 1967 race season, a P3 chassis with a P4 engine.
The 412 P and related 330 P3/4 and P4 models weren't eligible for the International Championship of Makes in 1968 as their engines were too large for the new 3 litre Group 6 Prototype category and too few examples had been built to allow homologation for the 5 litre Group 4 Sports Car category which required production of at least 50 units.[5] Ferrari did not contest the championship for a year in protest.
Four 412 Ps were built:
P4 Replicas[edit]

Due to the great fame and sleek appearance of the original design, more than a hundred P4 replicas of various design have been built. A high-quality P4 replica built with genuine Ferrari engine (e.g., a 400i V12) may command as much as $200,000, but simpler ones (often with Rover engines and Renault drive-trains) fetch around $50,000