I'm needing to stretch my drive shaft by about 6". I'm pushing the rear axle back a touch to give more wheel base. I thought it was gonna be a simple re-tube and balance but the shop said they couldn't get the tube and would have to build a whole new shaft around 3110 joints and 2.5" tube. Something along the lines of $450. So, brain went into overdrive.. is the shaft size on the 2wd the same diameter as the 4wd? I'm thinking I can cut the front slip yolk off the 2wd shaft (at whatever lengh it needs to be) then weld the 4wd slip joint in, and then pay the $150 for the balancing.