At a crossroads, SB guys please chime in.

This one is a a World block that's about 10 years old, the short block with the rotating assembly installed is likely around the same weight as the bare tall deck R3....
I think today the only way to get any kind of aluminum big block would be Indy if they have not stopped making them.

I think with my lack of sb knowledge and having having almost all the parts for the big block i will stay on my bb path. I was just curious.
Thank you for all there great replies.