Dimensions of 944 torsion bars

[LLVWGL]

i think mine were either 27 or 27.5mm diameter and same length as a late beetle bar ( I hope). However it is important to consider that although a t-3 Squareback bar is 27mm, they may be softer due to different composition. I am only going to install the porsche torsion bars after i have my 17x9 wheels, because otherwise with to small a tire and too stiff of a rear suspension, you will run into oversteer problems.