consider a girdle insurance. is it going to help you make power? not really but if you cant keep your bottom end together it wont matter either. and yes we do see alot less cap walk with our girdle kits, after market cross bolted mains dont work. we've even made a girdle kit for a JP1 hemi that was a cross bolted main block. still had cap walk before the girdle. now if your only tying the studs into the girdle you wont get much benefit as the caps will still flex and walk around.