Just wondering if anybody replaced their two piece drive shaft with an aftermarket one piece thanks for any info.

 

Do a search. I read several threads about that last year and was considering it myself. I think you can buy an OEM aluminum one-piece for your truck, but for mine the OEM driveshaft has to be shortened a couple inches for the longer length of the NV5600 as compared to the G56, which the later trucks use. You might search "one-piece driveshaft" or "carrier bearing".