AFB fuel bowl fitting - What thread type?

Yep, you're both on the right track as far as what I need - I'm looking for a

-8 AN male to 5/8-20 male.

It'd be good if they made these in .5" diameter line - with a -8 threaded male fitting


http://www.edelbrock.com/automotive_new/mc/carbs_acc/access_fuel_filters.shtml