What do I have to do to my 71 challenger 318/904 driveshaft to make it work on my 340/727 swap. I have a 489 8 3/4 rear end now. The original rear was a 741 case. Thanks in advance again!


2016 Diesel Ram 3500 Mason Dump
1971 Challenger
2013 Jeep Wrangler
1979 Dodge Ram Power Wagon 400 Mini Pumper
My other car is a Fire Truck.