Was looking for any feedback or opinions on World Products aluminum Hemi blocks....like Ray Barton and Bill Mitchell offer? Looking for a mostly street some strip set up. I have been planning and working on this project for a long time and have decided on aluminum over cast iron for the weight savings and handling. Aside from the extra expense of an all aluminum set up is this a stupid plan (should I stick with a cast iron block) & Stage V heads (ether way).