Thanks for the info Ted. I've got it bookmarked.
Carl, I believe the 3.09 first/4.43 ring & pinion combo is the same as what a lot of original Speedsters (and probably coupes, as well) came with. As you can see by clicking on the link below, we could set up a VW 5 speed almost exactly the same, with the added benefit of another 5mph in cruising speed.
http://calc.teammfactory.com/i...26+2&trannytype=
And if you wanted to imitate the 901 spacing exactly, substitute 1.69 for 3rd, 1.26 in 4th and put a 1.00 in 5th in the VW gears. I will stay with the 3.88 r&p with the 3.78 1st, though; I like the car to be faster off the line (even the 3.88 is a compromise, as a 4.125 would be faster, but I'm no longer the immature young man I once was). This is the 5 speed gearset I'm putting in my car (first gearset is stock VW, and probably what a lot of guys have in their Speedsters if the trans was used out of a donor car)-
http://calc.teammfactory.com/i...26+2&trannytype=
Looking at the different variations of the 901 trans, you can see Porsche really understood the benefits of the right gearing, and wasn't afraid to use it to their advantage...