https://www.ironmartonline.com/1988-mack-r-model-688st-tractor-e6-300hp-day-cab
1988 Mack R Model 688ST Day Cab | 300HP.
1988 Mack R-Model 688ST tandem axle day cab tractor, E6 300hp, Eaton Fuller 10-speed. Runs strong, well maintained, original owner until 2002.
r modelday cabmack