I've got a 70 T/A Challenger with a original 340/6pack, I rarely drive it anymore , but I fired it up the other day and noticed the accelerator pump is leaking pretty bad! So it looks like I will pull the carbs ,anyway I need to know what size diaphragm it has ! E-bay has both 50 cc and 30 cc, anybody know which one I need?
Thanks!

70 T/A Challenger 78 Aspen R/T 87 Indy 500 Dakota