exhaust dimension

[Jamienova]

i want to put just a back box on my 1.2 nova merit plus! could anybdy tell me the dimensions tht are needed? thanks

[Leeboo]

I assume you mean pipe diamaeter? Can't answer that but iirc all Mk1's or MK2's use the same diameter of pipe except for maybe the GTE/GSi.

Corsa back box's can be made fit easily also!