i have a 340 mopar and it has eddy rpm heads with a 171cc runner. it has 2.02 valves and i have been told to install 2.08's. Also was told to stick with the 2.02 and that i wouldn't see much gain from the change. Because at his cu.in. the velocity/speed is what i need. What do you guys think? this is a street/strip engine 11.6 comp. soild roller .665/.668 258/[email protected] 108 lc 3400 lbs.