240 inline six

hey just curious i have bought a 66 ford f-100 with a 240 -6 it already has a header with dual out lets and dual exhaust thhinkin bout goin to dual 2 inch with flowmasters it has been bored to fit 302 pistons not sure what that would make it bored to (if ya didnt know i have not been a ford man see screen name) but it still has stock carb and intake i would like some input on performance upgrades tricks that people used to do on these engines to squeeze out more power it is my daily driver so i like the fuel economy of the 6 versus swapin in a big block for power any info would be great or sites on the subject

thanks guys