a gt35 is probably the biggest turbo you can go on a stock internals TURBO engine, not a non turbo internal engine. if you want to put a gt35 on ur non turbo engine you will have to put forged pistons and conrods in.......otherwise boom.
and i would probably save the money and buy a brand new gt35 instead of a used one, at least that way u will get a warranty if anything happens to the turbo (manufacturers fault)? (someone confirm)
have u thought about whether ur going high or low mount turbo? injector size, you will need to get bigger ones, bigger fuel pump, adj fuel reg........getting the block machined for the pistons/conrods....even if u get a turbo engine and forged pistons the block will still need to be done.......internal or extrenal wastegate?, intercooler what size? oil cooler...wont hurt to get one...fuel rail......u will need a alloy radiator.....
u can use that kind of turbo on a low mount manifold but would be better with high mount tho.
something like this isnt worth buying shit cheap products....do it right the first time and u wont have any issues buy cheap shit and ur guaranteed to have issues.