Mike,
You have done exactly what I am in the process of doing; By the way, I have installed a Torsen differential on my Kirkham 427 with a 3.31 rear, a TKO 600 with a .82 5th gear. The car had a 3.54 previously installed with a Tremec 3550 “Rock Crawler” box. It was way too short! I LOVE the Quaife Diff! The car has so much more traction and it is so smooth!!!!!!!. Handling is much more linear than before with much less over steer.
I am planning to do the same to the Frua! I am still debating in my head if I am going to install that Toploader that I just purchased or if I am going to install a TKO 600 with a .82 5th like my other car. both ar bolt on. With the TKO the 3.31 rear end is probably best, with the Toploader, the AC manual says 3.08 rear was standard. You know by the way, a manual box generates a lot less heat that an auto box. The Toploader is also half the weight of the C6 and a lot skinnier, maybe it will help the hot air escape.
Emmanuel [
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