Big Block Advice Needed

When I bought my 68 Barracuda this is what was in it, 446 with 2266F pistons .074 in the hole,.020 steel head gaskets, 509 cam, Team G intake, 850dp, 906 heads cleaned up gasket matched [91cc] measured. Less than optimal for performance. Turbo Action 3800 converter, 391 gears. Weight about the same as yours. It ran 11.91 @ 111. I upped the CR to 12.5 and put .557 sft in and it went 11.41 @ 117. Changed the the cam to the .590 it went 11.27 @ 119. With Indy SEZ heads, Torker II intake an ATI in 5200 converter 10.82 @126 @ Cecil Cty. With a Thumper dommie and Super Victor 10.66 @ 125 @ Mason Dixon b/4 it finally took a crap. Pull your heads to see what pistons are in it, put the best heads you have or some aluminum [if you have the funds] on and sft or roller in it. 440s make power it doesn't have to be perfectly optimal. Just have fun. What M1 are you looking for 4150? For what it's worth I found no difference between an M1 and a TorkerII.