1.8 and williams exhaust

[rossdj1983]

just wondered if they are inter changeable?

[Stoker Willi 1 303]

yer mate they are. thats why i said if that you have a willy manifold on your motor that does not mean it defo is. sorrry you still having doubts are ya

[Mattie]

up to the CAT they should be....its the flange on the CAT that meets the down pipe which are at different angles!

[rossdj1983]

so the cat differs to?

[dan-hipgrave]

The angle of the flange where the CAT joins the downpipe will be different yes. Also the obvious manifold and downpipes are different.