I ordered and installed a Sanden rotary compressor along with a bracket to fit IH on my 1086.  I think the two cost about $400.  You need to have the system flushed, evac, and fill with 134.  I worked through my independent auto repair shop. 

Trying to keep a seal in the Tecumseh or York piston pumps proved useless.    

I found a second hand Magnum seat suspension at a salvage yard for $75, put some new nylon parts in it and now I have air ride in my "10". 

 Fehr makes a good cab kit with excellent service.  $126  Fehr Cab Kit