I have a 1995 int. 4700 low pro rollback with jerr-dan bed with a weak weak t444e slobering all over the place (238k) now the ecm went out. the ecm is $600.00 plus ya have to wait for one. and the engine drinks oil. so i went and bought and running and driving (150k miles) 1991 4900 cab and chassis with a strong dt466 with a 6 speed trans it. it has low gear and 6 more gears not sure which trans this is but it works great. i paid $3000.00 for it it is sitting on 6 new tires. i will be installing the complete drivetrain in my 95.my truck has the spicer 5 speed trans in it. both trucks are equiped with air conditioning. but questions are #1 are the rear end ratios going to be a problem ? my truck is sitting on 8r19.5 rubber the donor truck is rolling on 11r22.5 tires. question #2 is how does the tach work on both trucks? is this going to be a problem? #3 question how about the rest of the quages am i going to have a problem here? question #4 is my pto off of my 5 speed spicer going to fit this 6 speed trans? i know that i will have to cut out the firewall on my 95 and install the dog house of the 91 on to my cab. it will be alot of work but my 95 is real slick truck and drives great. i dont want to make payments on a new one so i am willing to do the work. ANY info will be much appreciated. any body with knowlege of corn binders please chime in THANKS!!!!!!