For a 2176 with 78.4mm stroke and 94mm bore... should I be good with stock I beam rods? Or should I get H beam and move up to 5.5?

I need to have my rods straightened and I guess depending on the outcome I may need to replace or they may turn out fine... If so I will just put them back on... I suspect they came as they are... but found someone who says he can make them spot on.

thoughts?

you should be able to use stock rods up to 82mm stroke without issue but im not sure what you talking about "straightening", if a rod is bent i would replace it or get another set, however i have had stock rods rebuilt, as in the crank end checked for roundness and resized, new bushing in the wristpin end and had them balanced and have had no issues whatsoever

To try and straighten a rod or two just to save a few bucks is not wise. Once bent and straightend its weak and can fail much easyer. That set is also going to give you different deck heights and compression ratios at the cylinders. Personally I would throw them in the scrap heap, but that's me! New rods are a lot cheaper than a one rod coming thru the case.