it is a P. this motor has been toyed with for sure as it has a forged crank but cast pistons the odd thing is the bearings are date coded 71 the timing chain is dated 83 so someone was in there. as for some of the other stuff this was an export car it has an odd euro serial# plate on the fender well and it has the I on the fender tag and the story is that a service man brought it back from Germany.