440 score for the altered!

I have a '72 440 in the same configuration; steel crank with a ThermoQuad supposedly from a cop car. Mine has the '346' heads which are not terrible castings, but supposedly not as good as the later '452's. My block has the stiffening ribs for cold weather which apparently is a desirable and rare option to have in an RB. The block warmer plug was still installed when I got it. I paid $400 for it years ago.