Personal opinion: Wiseco/K1 combo is overpriced and overrated. All they (or any other company for that matter) had to do was make a simple forged piston, but they made a $1000 piston/rod combo that you can't use one without the other. :violent1:
Alternative: https://www.flatlanderracing.com/index.html (Rebuild kits section in sidebar>High performance rebuild kit>Chrysler) $970 for pretty much EVERYTHING except for a cam, and the pistons are custom forged ones with thin metric rings being a $130 option.
Couple of other things, why are 220,000psi studs so much more special than 200k ones? Cuz ARP has the 200k ones in stock, and most likely it'd be more economical than having a custom set made.
And... a 9.1 compression would be pretty close to the last thing I'd want if I were building a boosted slant, and apparently others feel the same because if I remember correctly, Tom runs a CUSTOM piston with his K1 rods that puts him somewhere around low 8s, maybe even high 7s. Pretty sure I read that over on the turbo forums.
Another runs a .100 copper gasket to lower compression. Are you sure Ryan really runs a 9:1?
Oh, and What do you mean? Does it have 'BH' stamped somewhere on the block? Those are the only 'best' blocks that I know of, supposed to have thicker walls. Heads (as long as they don't have the dimple in the chamber) are really just a matter of preferrance as far as I know. Some like the drool-tube with its lighter weight and more spark plug choices, some like the peanut head for its ability to be ported out more and not leak from the spark plug tubes.
