ive read abit about this but im still abit confused. ive got a 89 xr3i efi could someone tell me what has to be done to fit a ztec in to this model. im just looking to fit a standered ztec for now just to get it running. i wana keep everything from gearbox to the wheels cvh if i can. i need to know everything u can tell me. do i go for a 1.8 xr lump or a 2.0 mondeo lump? im looking at whatevers easyer to fit. plus the wireing in big detail. any help atall would be good.