i have a t3 turbo, and im wanting to switch the t25 out...i know im gonna need a new down pipe, new intercooler pipes, new exhaust mani, an external wastegate, a boost controller, some kind of fuel managment(injectors, fuel controller(already have a fuel pump)), and a bigger radiator...my question is, is there anything else i would need, and where can i find an exhaust mani that uses an external wastegate, thanks for the help all

 

Also...

what kinda power increases could i expect, ive heard 350-375rwhp with a t3...thanks agian