Hi Bernie..I have a set of the dart snr iron heads and they are excellent heads, but, I can hardly lift them.
The new engine is going to have as much alloy as I can bolt on it, and that more likely means AFR 185's.
I want to keep weight to an absolute minimum for handling etc. I'm even going to ditch the jag cast iron calipers in favour of nissan units to save some weight.
Personally I don't think you can beat the 351 windsor based engines for power to weight.
cheers