Disclaimer: Links on this page pointing
to Amazon, eBay and other sites may include affiliate code. If you click them and
make a purchase, we may earn a small commission.
Every V6 SHO uses the Nippondenso 10P15F compressor, ATX or MTX, 1989-1995. Pre-94 will all be from an R-12 system, and will need to be filled with R-134A-compatible oil (some say mid-'93 was the change over to 134, although I've yet to see a '93 with a 134 label from the factory).
If you can afford it, I'd recommend buying a rebuilt compressor, a new drier and a new orifice. About $400 total at places like AutoZone, and will usually have at least a year warranty, and IMHO will be the best option if you really like to have A/C reliably!