1970 340 Factory pulleys and brackets.

Sooo that's a 3 groove crank pulley? Got a picture?

I have this 37691-41 7"/7.75"x3" 3 groove
A/C alternator bracket LA
Flat triangle upper bracket LA
Curved lower alt bracket LA


The problem is that I don’t know for sure what these will look like, or the correct part numbers. I bought my car as a roller, no engine, no transmission.