When I was still rebuiding and restoring carburetors I refrained from bad-mouthing other sources as it's just not cool and really never a need to do that to steer work in your direction.
Now that I'm retired I'll make up a short list of where NEVER to buy from or send a carburetor to.
National, I-5, Remco, Holley, All American, Carb Junkies, JET, .....I'll stop there as I've probably pissed enough folks off already, but the list is at least twice that long.
Every single carb I've had in here from those sources is absolutely a complete MESS and never had a fighting chance of working well on anything they would get bolted down on.
To save a lot of typing here is a link to one I got into and put up a thread with pics, good ready about commercially "remanufactured" carburetors if you have the time......
https://cliffshighperformance.com/si...LF42WLudnhRrvw
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If you can read this, thank a teacher. If you can read this in English, thank a Veteran!
https://cliffshighperformance.com/
73 Ventura,
SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile),