we charge $4000 to do a 2JZ Conversion in a 240sx, thats labor, mounts, wiring, radiator, and smoe other stuff. Now go buy a Motor with an auto trans for $2500, SAFC for $200

you got everything to make 300whp/300TQ add a boost controller an you can make 350-380.

An SR20 by the time you buy a legit motor set, install, wiring, clutch, injectors, fuel rail, turbo, manifold, exhaust, clutch, etc, youl have about the same money in it. but SR20s will need a upgraded tranny by the time you reach 400whp