Well i currently have a 13b from Atkins with a stage 2 street port. Has about 20k on it since rebuild, still runs amasing, but i recently aquired a running 13b. I was wondering what all would be required to increase the Max rpm, hardened stationary gears and such, so that this engine can take full advantage of a large port. I basically just need a list of parts i would need to upgrade to raise my redline rpm.

 

Hardened stationary gears, balanced and clearanced rotors, drilled out eccentric shaft for more flow, different apex seals (softer ones), a higher psi oil metering pump, among other things. Do a little search for bridgeport and you should come up with better answers.