tranny, ecu, harnesses, axles i believe one or two mounts speedo and whalla.. well then the turbo componets as well.. but doing an SR20deT swap is like doing an Sr20de Swap.. so compisate for the turbo. make sure its a front wheel drive
there is no such things as a front wheel drive gti-r engine. all the gti-r's came only in all wheel drive. actually, all the det engines that will fit in our front wheel drive cars were only available in awd. it will still work though.
GTI-R swaps are harder than other SR20DET swaps and the GTi-R motor shares little to no parts with the other SR20's, so parts availability is an issue to consider. Most people don't recommend a GTI-R swap unless you really know what you're doing and have done swaps before. You could always have the work done and let someone else handle the difficulties.