I am restoring the AC on my GS. It was an original AC car. I dug through Mike Garrison's skylark graveyard a couple years ago and and got all the missing components. Got the condenser/evaporator cleaned out and pressure tested, new expansion valve, 134a dryer, replaced all the seals with green seals, etc. I was wanting to go back to the factory A6 compressor and upgrade to R134A. Some folks tell me the A6 with 134A won't cool down the car and others tell me it works fine. I've also heard it will work best if only charged to 80% with 134A. Anyone run 134A in an A6 compressor? How does it perform? Thanks.