ls_on_boost

i just bought a built ls bottem end it has B18B1 cp 9:1 pistons, eagle rods, acl race bearings, arp head studs stock sleeves i have a 18g greddy turbo kit whats the most boost the bottem end can handle and the most the turbo can handle i plan on up grading to a ram horn and bigger turbo i have 450cc injector and i also have 1000cc rc the head i will be using is a ls head with a prot and polish everything else is stock can anyone help me out thanks.

Fuse

around 500 hp. 450 cc are only good for bout 300 hp.