Heads opinion

Sell the X's with the 340! Flow wise, little difference between those and the "J's".

As far as "new" heads for the stroker? It really depends on what the application is your going for? A set of cleaned up "J's" might be right in your wheelhouse? :)

If you need to move to a 2.02 valve, you can always weigh the option/cost of going with a Edelbrock/ProComp head?