thinking of buying a uk terzo engine as mine is blown(1995wrx)but can i use my coil packs on this as i know these are the single ones..

 

The Terzo engine is 1998 so would have had a coilpack on top of the inelt manifold, with regular HT leads going to the plugs. A 1995 WRX has the coil on the end of the lead (commonly referred to as coilpacks), which sits directly on top of the plug. So I'm certain the answer is no.