Mechanical secondaries,no choke or choke horn,billet baseplate and metering blocks,4-corner adjustability.
I originally had this on my 302 then realized it wasn't enough carb for my 554hp/383 stroker...so it has sat in a ziplock bag on my shelf for about a year.
Carb literally has less than 100 miles on it.
Summit lists it for $540 (which is less than I paid,lol),I'll sell for $375/shipped (lower 48 states).
Thanks for looking
John