I have found jdm ej20t with trans and ecu for $1100 what else is needed? How hard is this swap?

if the wiring is good, ie the ecu and harness arn't too narfed up the electronics won't be too bad, but as far as others, the engine mounts should be close enough to work, tranny X-member will have to be fabbed, the driveshaft will have to be either lengthened or shortened, and the front axles will have to be swapped with 23? spline turbo axles, the tranny ratio probably won't be 3.9 so find out what it is and get the same rear diff for it, if you don't it will blow up somthing as the stock 3.7 tries to keep up with the 4.11 or 4.44 from the JDM

with 23? spline turbo axles,

 

 

25 spline i think