I believe they are still going strong. Eric can be very busy and not real quick to respond to emails. You will want to use a 440 block for several reasons but the most important reasons are the pistons needed for the conversion are for a 440 and the other thing is intake manifold selection. I’m not sure anyone other than Stage 5 made any intake for the B block. Also you will need a set of heads that have the raised exhaust ports, the standard port location makes it almost impossible to get exhaust on it in an Abody. Good Luck I’m looking to build another Stage 5 conversion for my Superbird project. The engine in my Barracuda makes more than enough power for anything I need on the street.