i am picking up a 5.3l v8 out of a 2003 or 2004 silverado. i am dropping it in my 1980 c10. the truck has a 350 in it now but its old and needs work so why not put something nice and new in. couple questions about the 5.3l. is the bolt pattern for the tranny bell housing the same as the 350's? also are the corvette heads and intakes interchangable with this motor. i believe that they are just need a second opinion on it.