I had an rs1800 lump in my Fiesta Si b4 the 2.0, it was quite nippie and i used to give it a beating and i never failed me really. Only thing is insurance is stupid for what it is, ur much better off bringing a 2i 16v up to rs1800 spec and not tellin insurance or getting a 1.6Si like mine and wacking a 2.0 init .

I would go fiesta personally but im biased and have never liked escorts really except a cossie obviouslly. But the rs2000 engine is more powerful and apperntly just a full exhaust and filter can see 160 bhp out of them.