I have a stock 1970 Caddy 500. I've pitched my prop so as to limit my RPM's to top out at 4200 which gives me a max of 2100 RPM's at the hub with my 2 to 1 belt drive which is where I want to turn my serius series blades. I have decent push but am wondering if switching out my stock intake for a aluminum Edelbrock will add enough horsepower and/or torque to be worth the expense. I want to be able to add a little more pitch but stay in the 4200 range plus lose a little bit of weight. Any ideas on this being a good or bad option? Thanks.