OEM NOS Delco Rochester 2G/GC multikit. Supposed to service most Rochester 2G carbs. The 2GC has a choke and is the standard 2bbl on many '60s GM low-performance applications. It's also frequently the center, primary carb on 3X2 setups...and is required for my fancy-dancy 3X2 manifold for my '63 394 Olds.
The non-choke 2G is used for the end, secondary carbs on Rochester 3X2 setups.
Sadly, the last aftermarket kit I bought from a "reputable" source had a plastic accelerator pump cup that turned to goo in less than 2 years.
Apparently, ethanol MAY be the culprit, so I need to do further research before I build the carb.
"Ethanol resistant" cups are available, but you never know what kind of bottom-of-the-barrel plastics our "offshore" manufacturing buddies will slip in to make a few more rice-grains of profit.
The follow-through required to be a non-chimp mechanic takes experience, knowledge, thought, time, and effort, and it's no surprise so very few bother.
I also sprung for the head set for the little Neon, and I'll start building her junkyard head, on the bench, on Friday.
Though the head that's on the engine definitely has one or more bent valves, and between the two heads there are probably enough valves do git 'er runnin', my SOP is usually to replace all the exhaust valves whenever I do a head...but that practice came from my aircooled days. They're about $12 a pop fer the Neon (but there are 8), they're available overnight locally, and are relatively cheap insurance...assuming they're not Chinese potmetal. HOWEVER...since there are 8, I'll be looking carefully at the condition of what's in the junk head before I spring for noobies.
I'd prefer to build the head 100% on the bench BEFORE I remove the head that's on the engine in the car.