There are guys making ~650-700+HP with 2.5" inlet/outlet intercoolers on V8's, so should work pretty good. I've been looking at the same IC kits.

Have a set of OE rods magnafluxed to check for cracks, but otherwise they should be pretty durable if the tune is good and arp bolts used. I'm "hoping" to put 600HP through stock rods. At least the first turbo L6 I assemble will be stock rods capped with forged pistons.