Randyretired

The 5 foot frame extension was to facilitate carrying a Subaru length wise.  The HDT drives fine and is very comfortable.  I did the extension myself so the cost was minimal. I also built the bed all of that was 15 years ago.  

thanks for reply, getting ready to stretch my 2013 volvo 730 this winter. like you wanting to carry some thing longer. will be adding carrier bearing and drive shaft. was certified welder most of my life, may need help figuring drive shaft angles .do you know any body on forum with that experience

I just added to the frame and the tandem axles didn't move.  Depending on how long and how much weight you will be carrying it can result in a more maneuverable truck.  For setting drive shaft angles the one time I dealt with that I used a firm in town that specializes in drive train.  They built the drive shaft and helped me get the angles needed.  There have been some discussions on the forum about this and lengthening frames.  We could get some more input with a post on the forum.  If you want you could post on the HDT forum what you want to do and ask for input.  Some of the replies will need to be scrutinized but there are some pretty knowledgeable people that can be helpful.  Adding length without moving the axles can be a little complicated but it has worked well for me.  My 2001 Volvo has the short 42" sleeper and I carry the car at an angle such that the nose extends above the cab.  Iuse about 10' of ramp behind the truck and that angle continues all the way up.  I load a RZR with the roll bar removed crosswise under the front of the car.  I also have a 100 gallon fresh water tank and a 100 gallon waste water tank along with a generator and spare propane tank on the bed.