i'm doing it at mo cus of ure engine if ure not gonna run the rs box u need to swap the bellhousing round i've used the fiesta 1800 diesel if u run the rs box u need to make a box mount and cut out some of the chassis leg to fit i.e harder engine mount is a piece of piss to make took bout a day to make ull need custom drive shafts other than that its just plumbing and fiddling round with other stuff
p.s if u use ure box after speaking to cts i think ull need atleast a s2+