how much cost to install a 36" sleeper on a daycab tractor ?

You need to make sure your wheelbase is long enough for the sleeper.

If you need to lengthen the frame, move the fifth wheel, and other modifications it can get expensive.

 

Tell us some info on the truck and what you plan on doing with it.

 

I think it can be done. I was afraid your wheelbase was going to be much shorter.

I can not help you on any shops in Florida.

I use to drive a Freightliner M2 112 with a small sleeper. It was 24" or 26''. There is a picture of it on my profile page. It would have been a good truck for your use. IT had a 195'' wheelbase.

If I was guessing If you buy a sleeper for $1,000 you will have another $1000 in labor.
For $2,000 you could pay a lot of motel bills.

 

I would not think it would be overly expensive. What would get costly is if the frame on the truck needs lengthend.

 

Google Bentz Sleepers. They have a cool 36'' add on sleeper. You could give them a call and they could give you an estimate of cost and advise on if your wheelbase would need modified.

 

Look at this picture.