Only difference between 170 engines and normal black top is betterrods/pistons, better head vvc different inlet and exhaust manifold although you'll probably bin the last 2 although i just cut exhaust manifold half way down and turned round,
Anyway fitting is same as any other rwd zetec conversion, although space will be very tight in a minor, battery il have to go probably have to cut back bulkhead a lot
If was mine id fit an vvc K series