As most folks know mopar is way behind on there products like cylinder heads, blocks, ect. They have chevy small blocks capable of 600 cubic inches with after market blocks. They have small block mopars up at around 500 Inches. R3 blocks only capable of 4.220" maxium bore. Not many good conventional head options that make much power. Also the big block side the bore space is only 4.800" for iron race blocks not an aluminum hemi where they are 5.000". For the folks that run classes that have to use stock style bore space engine blocks or conventional cylinder heads mopar just doesn't have much to offer. Either b1 or indy 600-13 heads. Chevy guys have a 4.840" bore space with the new SR 20 heads. Ford has a 4.900" bore space and have the A460 heads. The SR 20's are only a few years old. Ford also comes out with new stuff. To bad there wasn't more of a market for mopar guys. Besides my opinion it would be cool to hear others about the whole R&D for mopar. Thanks Moparts for listening to my rant..
