I just picked up a 2 door falcon coupe today, door tag says 64 when i look it up, stamp in drivers side fender under the hood says 65, so I am going with that. I have a few questions that I need some help with. the engine block casting number is D8BE which i read as a 78 250ci six from a fairmont, but the cylinder head starts with a C8 which I figure is a 68 head. I cant figure if its a three or four bolt waterpump, cant see the whole thing. My main concern is: what oil filter do I use? its got a napa proselect 21515 on it but is there a better filter with valve in it you all like? Also, I assume I should use lead substitute because the head wont have hardened seats? Lots of valve train noise so I want to run a quart of Rislone with Rotella t 15/40 and see if it quiets down.