[Monster]

Regarding your driveshaft questions:

The yoke (goes into the end of the transmission) splines/length needs to be correct for your transmission. I suggest that since it sounds like you are not that framiliar with the drive train (and to save you time & money in the long run) that you visit the "driveshaft shop" that will be doing the shortening and get some information on what you will need to get for your driveshaft. They should be able to tell you which rear flange & yoke you will need and how to measure for your application. For a ballpark on cost, we just had a driveshaft made (for another project) in San Leandro we supplied the flanges/yoke it cost about $225, this included new u-joints. Check with the guy's in Sac area for suggestions on an area driveshaft shop.

good luck,
Mike