RE: Converting an Aftershock To an LST XXL?
I think you would need the LST2 upgrade kit, then the XXL chassis, side-rails, and center drive-shafts... Body too..
Might also then want the XXL transmission output gears..
I guess you could just get the chassis and center shafts for starters if you just want it bigger..
Forget the steel spur-gear - IMO.. Not needed..