I overhauled my 350 engine and bored it to .040 oversize. That make my 350 like a 355 doesn't it? Can you use GM Vortec cyclinder heads with an Edelbrock Performer or Performer RPM manifold? For off-road/rec use what cam range do yall reccomend? There are so many to chose from like idle-4,000rpm or 1,500-5,000rpm and so on. Do any of yall have those roller rocker arms? Do they make a difference at all over stock stamped rockers? Anyone have a geardrive instead of a timing chain setup? Is it better or worse for my light off-roader? Does it really make a loud whine like they say? Thanks ahead of time. h0nke.