Hi Brett,
Engine Masters ran an article fairly recently on comp builds with limitations on block size. The small block comp was dominated by stroked windsors running CHI heads. Crazy horsepower and torque figures.
http://www.popularhotrodding.com/eng...lenge_results/
Impco or Gas research (the debate goes on). I'll have my twin impco setup organised fairly soon so I'll post some photos when it all arrives.
Regards
Hogster