Should be able to find something in the $20K range from the early 90's. I'd look on e-bay just to get an idea of prices. The most popular engine/chassis from that era (IMO) was the Chevy 454 with the P30 chassis. P30 has independent front suspension with air bags. What ever Class'A' make sure there is not too much RV length behind the rear wheels!!! This causes rear to swing & sway wnen trucks pass or in the wind. Also can cause rear bearings to wear out early from being over loaded. Those 454's had 4 problems you'll experience. #1. Exhaust manifolds crack because head is bolted straight to the manifold with NO GASKET! Too much heat transfer too fast. Install aftermarket METAL gaskets or beat fix is headers. #2. Exhaust 'Baffle', at the TEE sticks closed. REMOVE IT! #3. Exhaust gas 'Reburn" air system causes EXTREMELY hot exhaust. Pinch off air tubes feeding each cylinder and remove belt driven air pump. #4. Starter motor absorbs heat from exhaust manifolds when engine is 1st shut off (gas station) & distorts Throwout gear housing. Can't restart till it cools down...45 minutes? Insolate motor. Electronic module inside distributor go bad from heat. A tach will indicate a beginning problem if it shows RPMs at idle starting to become irradic. Been there..done ALL this. lol
