273/904 torque converter

Thank you for the info, I did not know that. Looks like I will be calling a few other converter shops to see what they offer, I don't see the Boss Hog for the earlier 66 motors. Any suggestions on other shops to call for the converter for my 66 please let me know, I only want to do this once. I know there are other posts on this site that recommend other places, but you guys with the experience please chim in. Also other brands of converters in the 2200-2800 range.
Thanks
Bob