I'm not sure if we got the 'Dirt Spec' car as a kit here in the UK?
This is a pretty good run down of all the Team Losi cars, including the XXX buggies.
https://www.liverc.com/news/special_...g_2WD_buggies/
I've got an original XXX with the original clamp style shock collars, & did own a mid motored Losi CR2 with the Atomic Carbon conversion - the donor would have been a XXX CR - which was the last of the XXX 2wd buggies - it had the EA3 plastic parts.