If Dart made a block for our cars, it wouldn't be for strength, because we already have that. I could see them making a custom block with increased spacing between bore centers and a little more deck height for running a much larger bore and stroke, therefore increasing displacement. It's the hot thing in the V8 crowd. A 454 cubic inch
small block Chevy is only a few mouse clicks and a credit card away. I doubt if there'd be enough market in the DSM crowd to put in the R&D though. We're even cheaper than the Car Craft crowd.
