first of all put up some pics of the car and its engine,
and if u want a cheap engine with more a fiar bit more power than the 1.6 get a 2.0 pinto from a cortina or rs2000 escort. the engine will bolt right in, and u can still use the existing gearbox + bellhousing. and there are a LOAD of aftermarket parts available for it
heres an examply of a high powered 2.0 being built
http://img526.imageshack.us/my.php?i...ture030ho3.jpg