Originally Posted by Stubbs

Yes, you'll need extended driveshafts. Problem is, unless you already have the gray tranny, I believe the output shaft will be too small.

Best bet is to get the whole thing on ebay (chassis, gray trans, longer chassis braces, and driveshafts). I found a guy selling a complete package for $60. That's how I converted mine to the longer chassis.

Now, with that being said, I've got a spare short chassis (never been used) that I no longer need. Let me know if you're interested in it. I'm sure we can work out something.