Cost to swap 70" replace with 36" sleeper on Pete.

Call 4 states, the chromeshop mafia in joplin, mo (417) 624-2900
They sell after market bunks like what ur looking for or they can swap out with many used 36" bunks they have

 

Isn't the wheel base on a 70 inch longer then on a 34. Ripping the bunk of and replacing it might not be bad, but then you have extra frame your not using.

 

I have got to see this. Can you post some picks? Swapping same type sleepers is not going to be that hard. Just make sure the roof is not integrated into cab and sleeper.

 

If you have an ultracab you need an ultracab sleeper- hard to find in a 36" but I believe they were offered. Otherwise you need to change the roof of the cab to a flat top style to make the opening match up to a flat top sleeper, which means you have to re-do the interior, specifically the headliner. Not super complicated- I would tackle it myselfif I had a huck bolt gun.

You can also look for a 379 with a flat roof cab & a stand up sleeper. Then the flat top sleeper will bolt right on. These were more common in the earlier years of the 379 model.

 

I have done this type stuff several times and there are pros and cons...the pros....small bunk trucks bring a lot more than 10 k more in my neck of the woods....another pro the the truck will look stretched without actually doing frame work ...but don't think your doing it for looks.....cons....small bunks big money...70" bunks not so much in my area....a nice 36" can bring 4k to 10 k for new take off...70" struggle to crack 2K...doesn't stop folks for asking a lot more...but watch how long they sit on that bunk before it sales......then like others mentioned there is the roof difference...the big bunk truck will be an ultracab tall cab...and factory 36 bunks will be low cab style...so got to change roof caps on either cab or sleeper...sleeper is a lot easier and generally more affordable.... but will not look right to the pete perfectionist.....so in summary....lot of work and not cheap... time you procur the small bunk and do cap work and paint...as well as move brackets on frame...shorten tanks....etc ....forgot to ad Fibertech1 makes the Cap...speak to Arvil...tell em Rob From Mac Sales in North Carolina sent ya

 

That is definitely a cool set up. That is a smart set up. I usually have to move the trailers with my dozer to get them close enough to the crane when we build modulars.