Like some of you, I am spending Covid Vacation going through the hoarded parts. At some point I bought this bowl and when I rebuilt my Holleys, I guess I didn't need it or forgot to use it. I don't see a need to hang onto it. It will fit 2300/4150/4160 per Summit's description (which is probably who I ordered it from) https://www.summitracing.com/parts/hly-134-103 Looks like the cheapest you can get a new one for on the usual sources is about $80 with free shipping, so I will take a $20 loss--$60 with free shipping--if anyone needs one of these.