Holley 870 street advenger - junk?

The transfer slots are just barely visable from underneath, the engine responds happily to the mixture screws. I haven't drilled the butterflies yet. I have come from mechanical injection on methanol, a 750 methanol carb, and now this petrol nightmare. I regret selling my previous set up's.

Get an old 650 or 750 DP and be done with it.

That 870 is a street carb.