need a little help i just swapped my m5r2 tranny to a zf s5-42 tranny left the truck a 2wd so i need a drive shaft because the zf came with a regular yoke can anyone tell me which drive shaft will work i can get it shortened or lengthened if need just need some direction on where to look for that drive shaft

 

Do you have a one or two-piece driveshaft? A good starting point would be an F250 with the same wheelbase as your truck, then you will have to lengthen/re-tube the rear half to reach the 8.8 axle yoke. It was 3" longer to fit my '87.