If you decide to go with the BMI DB12R and want to convert for 1s LiPo lemme know. JP and I figured out a couple little tricks (like re-purposing, with a little Dremel surgury, the battery brace). You'll need to tape the pack in (slots are in the chassis) and after a bit of experience with the setup now I'm going to do a little "clearancing" on the flex plates at their bend to better clear the pack. It's GENERALLY ok, but now and again if I wasn't REALLY careful about how the pack sat in the car I could get a little rub.

BTW...the car worked REALLY well with this setup. It was far faster than I, I'm afraid, at the TimeZone Gran Prix...the driver was definitely the limiting factor.