Get rid of the Holley style carburetors for street cars.
No O-rings to leak!
No pump diaphragm to leak!
Fewer come-backs for you!
I hope your customer knows how to put out a fire.
SCCAChallenger,
What are you running in place of the Holley that alleviates these problems? I have an old OEM Carter from a 440 in a box, a Holley in pieces and the Demon 650 (Holley clone) that's on my car currently, none of these are exempt to leaking/damage from Ethanol.
