I did a similar swap. I have an 2001 Accent that came with a 1.5L but now has a 1.6L. Funny thing is, I bought a manual transaxle for a 1.5L and hook it up to the 1.6L engine. I have to throttle all the way up in order to shift now. Gears would slap and grind. Sometimes I couldn't even shift into gear. I thought maybe I put the new clutch in backwards, so I took it apart and it was in the right way. Clutch shows signs of uneven wear, and the teeth on the flywheel were scarred. Does anyone know what went wrong? It is a used transaxle so maybe its just bad. I may make a post of it.