My new 1968 Nova L79 project.

[jasonL78]

Ok looking for a little help from the forum. I was just going to bolt my AC bracket on the intake the other night and I realized I never seen this bracket with the idler pulley on it. The L79 is a manual transmission car so it would have smog for 1968 correct? I only know of one other 1968 SB nova with AC and it is an automatic car. So GM installed no smog on the automatic. Correct?
This is my concern the 68 automatic car has a 2 groove water pump pulley and 2 a groove crank pulley. My car still had its original 2 groove crank pulley, AC compressor, AC brackets, but not the correct water pump pulley. I was assuming I would need a 2 groove water pump pulley for an AC car. But now I am stumped with the smog pump, AC compressor, and this idler pulley. Does anyone have a picture of a 1968 GM car that has a manual transmission with AC and smog? Or even a belt diagram for the 1968 GM motors?
My concern is will I need a 3 groove water pump pulley and if so what is the part number.

Thanks Jason

This is the idler pulley I am referring to: