In-dash air conditioner - Worth converting or fixing?

we converted an R12 system to 134 in a small van we had at one time. Nothing but a nightmare since the 134 requires a larger evaporator and other things. The place we had it installed went thru 2 compressors and 1 new evaporator before finally recommending going back to R12.

So if you are really researching plan on replacing more than just the juice. I am sure there are some that will say it works but just how well they never say. Just my Opinion however based on experience.