400 Build vs 440 Build

I did a 400/470 for my 69 B'cuda. Eagle crank, Manley 6.760(RB) rods, Diamond pistons at 10.2:1,Eddy 84cc heads,Comp cams street solid roller,Eddy RPM intake w/Holley 800 DP. I think it's a great little package for an A-body and a whole lotta fun!!