Typical cost for A/C retrofit and overhaul?

[nomad]

"Light" is a word I only associate with Lotus's and stripped out Honduhs.

Exaaaactly! I once was at an autocross where a guy had a brand new WRX completely stripped but for the driver seat and dash. It looked terrible in there and he was all proud of the stuff he'd taken out to "add lightness".

He spent the rest of the day trying to figure out how why all the other cars were beating him senseless.
He took a new car and made it into a loud, hot, bumpy ride with no place to set a drink... that still handled like piss.:rolleyes:

[oldtimer]

Okay, I for one scan through some of the reading.  Here's my  two cents.  If your a/c system has not been opened I mean broke a line or taken the compresson out and it is not cold.  Have the system vacuum, the shop that will do it will tell you if there is a leak because they can't maintain the vacuum.  Then get some oil, that should be the first thing you do.  Because if you have negative vacuum the system will suck up that oil for the compresson.  Then convert the system.  Oh, I am taking all this from my  personal experience.  This 1991 318is A/C is cold even when the humidity in MD is 90% and heat inex is 105.  By the way mixing the two R12 and R134 is not a doable.