Been there, looked there, but thanks Stinker.
The problem is that the belt I need is a 'tweener. A 110" is an RCH too short, and a 113" is a good 2" too long (both readily available). A 111" 7-rib would be ideal, but nobody makes it. Paxton did me the favor of sending out a 6-rib 113" by mistake, so now I know a 113" won't do, and they can pay to get it back.
I think I'm just going to have to suck it up and swap pullies. It will be a big help if I throw a belt in BFE, although if I ordered a custom belt I'd order a few of 'em just in case.
I suppose I could go for a smaller pulley on the Paxton instead, but I'm already concerned about making much power on this setup without adding an AEM or VECIII, fuel rails & injectors, and a return line fuel system. The DC blower flash and the Split Second box from the Paxton (with the booster fuel pumps and fuel management unit) really won't be able to take this engine to its potential. I'll get this engine broken in and proven roadworthy, then take it to the next level (Hogan's intake, fuel system, engine management).