ef8ryder90

Whats up everyone.My friend wants to drop a 94 gsr in his ej1.He has a gsr that has been hit in the front and hes gonna give me the shell if i do the swap for him.I did my swap on my crx but his car should be much less complicated shouldnt it?Both cars are wired for vtec and is obd1 what harness do i use and will the stock gsr header bolt up with the factory ex exhaust.And i was wondering if i could use the gsr shift linkage?....Need help with some of these Qs. Thanks