A833 info

Brewer's has a decoder ring of sorts here:

http://www.brewersperformance.com/orderinfo.htm

I think your S/N is OR23142, and, if I calculated it correctly, the build date would be February 26, 1970, and that would be the 107th unit built that day. I tried to find a way to double-check the date and I found a page with a Chrysler 10,000 day calendar calculator:

http://maxwedge.com/articles/10k.php

That date code (3135) shows up as Thursday, Feb 26th, 1970 on the calculator. (Woohoo!)