GM 1 wire alt on a 273?

Vintage air makes a bracket for a/c and alt that mounts a Sanden 508 compressor and a Chrysler alt. Part # 162774-SDA

I mounted a GM alt on it with no problem and the alt adjusting arm that came with the V.A. bracket even worked attached to the ear on the compressor.

I also mounted a GM alt on the stock Chrysler a/c bracket and it worked with the stock adjusting arm.

When upping the alt amperage its necessary to put in heaver gauge wire to handle it.