340 rebuildup

im pulling my 340 back out of my dart. i would like some input on what to do i want to keep my bottom end (scat h beam rods, forged factory crank, speed-pro powerforged pistons, all race internal balanced) i have performer air gap intake, an mp .508 cam and a set of j heads (2.02) which the ports have been cleaned up on. what can i do to get the most out of this 340. open to any suggestions, but i would like to stick with the j heads though.



car is a 4 speed with the low first gear and 373 gears soon to be 410 though. no spray please!


cam suggestions and head porting suggestions(who to talk to) intake suggestions thanks chris