best parts to use

[Cheromaniac]

What would my motor be with 4.2 crank, 4.2 rods, .30 over 4.0 pistons in a 4.0 block? Would it be more or less reliable that way? Would i be missing out on alot of power?

You'd have a motor that displaces 4587cc (4.6L) and no, you won't lose power nor lose reliability. The only disadvantage is that you'd have a combination of relatively high SCR with a relatively high quench, so you may end up using a higher grade of fuel (91 or 93 octane) to prevent pinging.