[1968 RS/SS L89]

Pete,
Yes the engine block that came from the car did have the stamping for aluminum heads. I'm not sure if it was MT because it isn't in front of me and I thought I remember there being a few different suffix depending on trans or clutch options.

I've contacted all the previous owners I have been able to get in touch with but that was sometime ago. Seems the 2nd owner knew a little bit about the car but really not much of value and the 1 before me seemed to know quite a bit about Camaros but wasn't able to doc anything other then the normal things most everyone looks at.

I'll add a shot of the data tag if that helps? Not sure how though.

Thanks for the welcome.