Anyone Know of Online Engine Dyno Software so I Can Test a Few Combos?

Engine analyzer is suppose to be one of the best, you can try a free version of it here. <--This is a direct download link of an .exe. If you do not feel comfortable you can find it in their website.

But one thing you gotta make sure and do is run the numbers you get through a drive train loss percent (this goes with almost all engine simulations). I think the number was 10%?
It might not be even close because it is all just math, but it should give you a good estimate.