i did a engine change on my mates 1600 zetec, but a 130ps 1.8 lump in and it went straight in, had to change the flywheel and clutch, but we was keeping the 1600 box! it ran of the 1600 ecu fine aswell, we did put a 130ps ecu in there in the end tho just to get max power out of the lump!

When using a 2.0 lump, u gota strip it down so its just the block and head, and use everything of a 1800 (1600 wud prob work aswell), i mean the manifolds, pumps, sump, etc!! i think anyway, and it sud run of ur 1600 ecu!!!