We did build a long rod 400 street engine that worked pretty good but it was totally different than what the OP is talking about. We used ported Edelbrock heads for one thing and Hemi+0.100 rods with off the shelf stroker pistons. It pushed a street driver Duster to 10.90 times at the local track. Nice running combo but not really very economical to build. I don't see any point in building another one.