hey guys just want some opinions on a set of twins for towing what would be a good set up. its for a friend of my and he tows his dozer alot and the truck just seems like its running out of breath. any opinions would be appreciated

 

Open up the exhuast get a Smarty and cold air intake
Good to go! OH don't forget the head studs and the guages and the BD R700 twin turbo's