Alternators

I’m getting ready to order brackets and pulleys from, CVF Racing for my small block and they ask, if I’m using a Mopar or GM type alternator…I’m figuring since our cars use the alternator with the two dog ears to mount it to the bracket, it’s a GM type. From what I remember, Mopar alternators have one dog ear and the two small holes to run bolts through the bracket. Is that correct?
Just trying to get some clarity before I unload a bunch of cash.
Author: Camtron