Glock's new project: "Fred" w/ 5.3L LS swap info

[68 TT]

Another option is to use the Astro van A/C compressor. It is a smaller more compact unit than is used on the other GM vehicles of the time that looks a lot like the Sanden unit.

You may be able to snag the mount brackets off of the Astro van and modify them to work in conjunction with the stock LS brackets to make your own high mount kit on the LS engine.

I would see what they did in the $400 kit and make similar parts to use the Astro van compressor. They are inexpensive, easy to get and a factory GM part you can get over the counter anywhere in the country they sell GM parts.

You can get them as R-12 or 134a compressors too so if you are doing a retrofit like yours with most of the stock R-12 system in place you could stick with the R-12 version and not deal with the conversion issues.