If you take a DOHC 8v Sierra engine and stick a 16v Scorpio head on it then you have an RS2000 twincam motor but in RWD format, if you use the full Scorpio engine it's shite as it has the balancing shafts in the sump.

I bought a ready built one off a geezer last year, just aint got round to fitting it yet.

There was a bloke in Classic ford with one in a cortina that he had slapped a turbo on.