I'm not the brightest car guy, but what is involved in converting to R134A for my 85 GT with the V-6. Is it expensive ??? Have to put in new parts ??... will appreciate your inputs and comments. Thanks guys.

Funny how I have been looking into this myself, here is a good thread:

https://www.fiero.nl/forum/A...130314-2-119626.html

People have stated that the R12 does tend to get colder. If your AC system doesn't have any leaks, you could recharge it with R12 at a mechanic shop. R12 seems to have gone down in price recently due to it being out dated. I will probably go that route, and stick with the original stuff myself.

Just my .02