Oh yes, the 86 944turbo trailing arm's stub axle uses 100mm cv joints and cannot be interchanged with 90mm stub axles so unless one can find an axle shaft that accepts 100mm cv on one side and 90mm on the other, to be use with T1 axle flange at the transmission, I don't see how on e can use just the longer axle shaft with wider arms and still use 90mm cv joints.
Correct me if I'm wrong or any other suggestion?