On Sept 5, 1986 a modified Jeep Comanche set a new land speed record of 141 mph for compact-size pickup trucks.
Above: Original Ad for Comanche Land Speed Record
Details:
Engine - 4.0 L 6 cyl "Power-Tech Six"
174 hp
220 ft lb torque
113" wheelbase
5 speed manual transmission
Average speed: 141.381 mph in a two-way run over a one mile course
Peak speed: 144.028 mph in a one-way run
Source:
Lakeland Ledger - Nov 13, 1986
6D