got er done. much nicer with the rotary compressor. had the low side hose made up (59.00$)at hydrolic hose shop. with low side port tee crimped on, up high near the firewall for easy access. wish i had a high side port, but the junkyard compressor (seltec) from a 92 740 didnt have any fill ports. much less power loss than the old york, much quieter and the bad vibration at idle is gone. kind of a hassle for sure and it took me all day. thanks for the advice to rhaire and daveshannon. plus i can use the york for a boat anchor. :^}