If I had to guess, since the previous owner was running 10's, the fuel pump's already been upgraded. If it wasn't then yes you'd want a bigger fuel pump to run 60lb injectors and a turbo.
On a stock block (you don't mention Dart or Boss block), no matter what the internals, the weak link is the block itself. Around 450hp is the block's max safe operating range. With your heads and other mods I'd expect to make that at around 8-10psi of turbo boost. Good head gaskets and ARP studs/bolts are never a bad thing, but the whole block will likely let go before they're really a factor.
I don't recommend used turbo kits because it's impossible to tell the condition of some of the components before you install them. You also have to very carefully inspect the headers (assuming they come with the kit) for cracks. If any, consider them useless (if you weld them they'll crack again).
On a stock block (you don't mention Dart or Boss block), no matter what the internals, the weak link is the block itself. Around 450hp is the block's max safe operating range. With your heads and other mods I'd expect to make that at around 8-10psi of turbo boost. Good head gaskets and ARP studs/bolts are never a bad thing, but the whole block will likely let go before they're really a factor.
I don't recommend used turbo kits because it's impossible to tell the condition of some of the components before you install them. You also have to very carefully inspect the headers (assuming they come with the kit) for cracks. If any, consider them useless (if you weld them they'll crack again).
