944 Driveshaft / CV confusion

[74typeIV]

Hi, I have type 181 output flanges fitted and have late 944 wide Alu trailing arms, but I'm very confused about which driveshafts I need.

The CV's are 100mm diameter at both ends (normal 944) and the distance between the output shaft and the outer flange is around 21".

From what I've read on the forum I think 1987-1988 944 turbo axles should be correct, but I'd like to be sure before I shell out $$$$$$.

I going to buy complete new axle assemblies (CV's, axles & boots) so I'm not too worried about being able to interchange VW parts.

Thanks