i was originally going to do this with my mk4 but found it was too hard to get it to fit.
the engine mount was the biggest prob.
plus i wanted power steering so the zetec setup fitted better than the rs.
but i love the rs2000 engine, i dont care what anyone says they are a fooking good lump that can be thrashed and are easier to get power from.
you can get 170 bhp with a chip exhaust and a filter and egr removed.
they have huge ports as standard and thats why they sound so throaty.