I just realized i did not mention transaxle as Thats what i was referring to. Not sure which one is better to use and the differences.I'm not sure what you're asking, but the Porsche 996 rear suspension geometry is what I used in my homebuilt. I used the 996 forged aluminum uprights and fabricated the 5-link geometry with swaged tubes and rod end bearings. I found that the stock geometry bump steer was a bit off and I had to move the original Porsche inboard pick-up points slightly to correct the error. I suspect that Porsche located those points to compensate for the deflection of their stock rubber joints. The spherical rod end bearings did not deflect under load. I know very little about the 997.