Todd,
First question, Is she running Elec or nitro?
I'm guessing that its going to be converted to electric anyway, so save the $$ for the conversion kit and just find an 8E roller. The parts are interchangeable They share the same parts and components. Makes it easier in production when you aren't making 2 sets of the same parts. My friend who is now a Designer and Engineer for AE explained it too me. One run of parts, serves a dual purpose.
I just picked up a matching pair of RC8s. One an RC8TE and the RC8BE. Both were the E version from the beginning. Since then, the RC8TE has been discontinued. (I also just sold my Hyper7 to a buddy. It was converted to Elec. using the RCProductDesign conversion. Really dug the car.) My arsenal consists of AE's B4 and B44, just needed some bigger racers.
Coincidentally the new version of the RC8.2E just hit the market
http://www.teamassociated.com/cars_and_trucks/RC8.2e/Factory_Team/
I'll be checking out the different FT parts that come with this, and most likely upgrading mine to 8.2 status. I haven't driven my buggy yet, but I got the Truggy running and I am quite pleased with it. I still have to work on some ESC and radio settings, but overall, i dig the bigger truck. I don't know how much of the hype of the new car i buy into, but if its worthwhile I will likely get some FT Goodies.
There are some good deals floating around for used ones. Seen some complete rollers w/ elec. going for 250-500 and rollers for under 250.
MOmo