Well we took the cover off and found it to be a Dana 45.....with a 307!!! so I took off the 205 tires I had on just as project tires ....and swapped them for 31 10.50's and what a difference in RPM drop.....never thought there would be that much of a difference just in tire size....now cruises at 55-60 no sweat.....thanks for the info guys......by the way found a spare tire mount for a short bed stepside out at Carlisle...been looking for one for a long time.....swapped it for a front bumper from a chevy 3100...great find..........