While I'm not any type of expert on intercoolers, I don't think the purpose of better cooling is for a power increase, more to make sure that the power we already have doesn't fade with higher temps. If the cooling system could keep the supercharger air cool enough so that these engines ran as well with 90+ degree weather as they do with 60 degree weather, that would be great!
I'd like to know how much difference the Evosport spacers make.

Keep posting what ever it is that you find or decide to try.