You know I did not even think about the FAST cars. Of course they are not stock but do run stock intake , carbs and exh manifolds. Dave Dudeks Hemi has gone 9.90's in his Roadrunner for the fastest Hemi and I believe Ed Cooks Max Wedge 63 Plymouth has run 10.30's for the fastest wedge. I know some 440 six pack cars are also in the 10's. Thats about where I would think they would be performance wise. The Hemi is the baddest but the wedge is not far behind. I used to always feel that the Hemi's were for the top racers with money who want to be the fastest and the Wedges are for the average Joe (or Ron ) like me on a limited budget that will run respectable. I always here the Hemi parts cost more then the Wedge eng parts but I really never checked into that. Ron