Hey Rich,
I don't have to make it longer, cause I'll use the midsection of the M3.
I just take the last part of the Z3 exhaust, after the cat and welt it to the M3 exhaust.
The exhaust fits perfectly in the original rubbers, but you could allready see that on the pictures.
I also tried to fit the Z3 3.0 exhaust with the 323ti diffusor, but it doesn't fit.
If you stand behind the Ti, the left tip is on the same position as the 4 cilinder exhaust tip and that is the middle of the 323ti diffusor gap.
You have to use the original 4-cilinder diffusor and cut it wider to the right side.
For me it's just a temporary solution, cause I have to go true a soundcheck before I may drive it on the road.
After the soundcheck I'll get a custom exhaust with Eisenmann/M3 tips EXACTLY in the middle of the 323ti diffusor gap
