Just a thought, but i was messing with nodes and i changed some wbs on some trucks.
On Grave Digger 20 I made the wb really long, and on Rockstar I made the wb really short and made the axles skinnier and i just added a realistic handling GD 16
if you want to try them put these in your v4 zip
GD 20 (long wb)
https://www.mediafire.com/?spgv5u71b7wpyr6
Rockstar 'fun truck'
https://www.mediafire.com/?pua2vhjlo3xbubr
GD 16
http://www.mediafire.com/download/l0dtsfb0axd5c0k/GravediggerXVIrealistic.truck
(the steering [hydros] is a bit off, so im fixing it)
Also there an addon so they wont replace anything
This is just for fun, but let me hear your thoughts!