Hey guys i have a 90gxl that i am attempting to sell but am having some doubts. If i keep the car i am going turbo but have some questions. I know all the parts needed but.....

if i buy a jspec s5 engine what are the downsides if am rebuilding it vs a usdm engine?

what is needed to use the jspec wiring harness with the jspec engine and ecu? (its rhd)

 

basically the same engine, u will need a LHD harness. Or u can modify the N/a or TII RHD harness to work.

 

S5 evrything else is plug and play.
Just modify the NA harness.