[Lynn]

Thanks Ryan. You were part of the inspiration for this.
It's an 02. And yes, the Allison is a five speed. It is the same as the six speed. According to one article I read:

"...the only difference being the valve body and transmission control module (TCM). The five-speed version lacked the solenoids and fluid passageways needed to engage the sixth forward ratio.
A six-speed conversion kit is available to upgrade the five-speed Allison to a six-speed. The conversion kit includes a new valve body, wiring harness, and solenoids, as well as custom TCM tuning. The benefits of the conversion kit include: Smoother shifts, Better fuel economy, Better power delivery, Lowered road noise, and Less wear on the engine."

Unless I am going to be on the highway a lot, don't know that I would do that. The kits are close to $2k. The engine was only turning 2200 rpm at 80 mph driving home last night.

Thanks Dave.