OK!!
I'll try to dremel the holes a bit and maybe the engine mounts so that there isn't any chance of touching the center rear shaft.
Another thing is that when looked from the bottom the cutting for the engine mount screws to sit in the chassis isn't made with 90 degree straight edges.
The edges around that area are round and i'm afraid that the screws for the mounts won't sit flat with the chassis if screwed very close to that edge.
I'm a bit confused my self with this right up...!!!
Anyway i also want to ask about diff setup.
I tried some 10/10/3 and the car had a bit of a push on high speed turns but it was controllable.
Although on the exits of slow turns the rear would come around very easily and spin out.
I think i'll go to Mugen setup with 5/7/1 and see how it goes.