Questions about a semi pulling a 5th wheel...

If anyone is interested in a really nice rig...I can get you in touch with my brother. He use to use it to go south for the winter. But he has bought a Park Model down south and just drives his van south now. So they are wanting to sell the truck and 5th wheel trailer..40ft trailer with 3 slide outs. You can play basket ball inside this thing. :) He has added air ride hitch and air ride axles on the trailer to keep it from being beat to death on the wonderful roads between MO and South TX. He wants around 37K for the truck and 20K for the trailer. It is an FL70 not sure on the year, it has about 400K miles...started life pulling new boats around. I believe they spent over 20K putting the bed and skirting on it.