I was looking at doing a rear axle swap to a 3.45 for my 745. How familiar are you with the swap? I was looking to change the center section to perform this swap. This seems easiest at this point. What about the speedo gearing. Is it electronic or gear driven? In either case something needs to be done to keep the speedo accurate.

Also, how does the 3.45 perform in terms of acceleration (0-60 times or 1/4 mi), top speed, and mileage? I've seen gear changes of this type actually increase mpg in city with almost no impact on highway mileage. Please provide some feedback.

Anybody out there have a 745 with 3.45 gears and a five speed that can add some information?

Thanks

Rich 745