In general the cheap Chinese made carbs you find on Ebay or Amazon tend to be a "pig in a poke". I've purchased quite a few of them. Most worked o.k., but a few were perfect examples of lack of quality control: Improper jetting, mounting holes not bored all the way though, loose throttle plate screws, missing springs, etc.
But hey...most of 'em are less than 20 bucks....
The carb on the 2450 is about as simple as it gets. No adjustments, with just links for the manual choke and the governor. You can adjust running rpm by bending that gold tab attached to the carb. Bending it left speeds the engine up, bending it right slows it down. Like I said, not much to it, and in my opinion, if you get a good one, it will be a step up from the original plastic body carbs Briggs originally put on the Intek---even Briggs realized this was a mistake and manufactured subsequent carbs for this engine out of metal.
Just be careful if you put one on, to watch the idle speed when you take the machine off of choke. If it seems too fast, it very well may be, shut it right down, as it is easy to blow these otherwise good little 2 cycle engines up. (Ask me how I know this..
). If it's too fast, try and adjust that tab to the right. If it's still too fast, they didn't jet the *&^% thing right, and you could end up buying another from someone else, or a rebuild kit after all.