I don't think the 1/8 buggy conversions should be allowed into the 1/10 scale 4x4 class do to the weight differences. While it "might" be a handling penalty for the 1/8 buggies to have the extra weight, the 1/10 vehicles will be much more vulnerable to damage when the two different scales come into contact.

IMO, that would hinder the 4x4 class.