i have a 396 out of a 1966 chevelle super sport that says it is 425hp stock, but im not sure what has been done/changed in it. it has been sleeved proffesionally to .60 overbore-so what cid am i at now? i am also looking for a cam recomendation for it, it will most likely have a stick behind it with 4.56gears and either 38s or my 39.5s. it sees mostly roads and the weekend mud pits occasionally, what would be my best bet? also i need a good source on a used pully/bracket set-up for a big block, ebay is outrageous! also i need to find a truck oil pan for it, everything on ebay looks like car stuff.