Are you kidding me? A few guys have hit 300 whp on just a blockguard/arp studs. You're gonna need a decent sized turbo though not some greddy 15G pea shooter.

My suggestion is tear the head off, slap in a block guard, arp studs and get a fresh headgasket (stock). Get a T3 based tubular or log mani, Precision SC50 or just some t3/t04E 50 trim turbo, 2.5" downpipe, AFC hack and a 3 bar then carefully go tune and crank up the boost.

I would have a spare block if you were gonna go this route. Or just get some pistons/rods/your block honed and you should be safe.

BTW i have a tubular D16 T3 mani for sale from South Florida Performance and a SC50 turbo for 1000 in the FS section.