For those who have done 4 inch lifts and kept their factory drive shafts: I just did this on my 86 M1009 (with a 14 FF axle swap) and I'm questioning the usability of my factory drive shaft. I've measured before and after the lift and I now have around 2 to 2.5 inches of shaft engagement. To me this seems a little scary. I have no problem moving it around on the driveway while I work on other things but I'm leery as heck to go on the trail like this.
Your guy's thoughts? Go or No Go? Thanks