So, i'm going to stick this compressor in the same place that the original would go (i'm thinking). Do you think keeping the same belt set up as an original system is advisable? This is about 10 steps ahead of what i've thought out so far.
I'm not familiar with the compressor you're going to use and it's bracketry for installation or the number of belts it uses (I'm thinking it might use a single belt). If the compressor uses a double belt and you mount it in the same position as an original RV2, then you'd probably need a 3 groove pulley. I suspect what you'll have to do is mock everything up to see exactly what you need.