With 35-37 I would look bigger axles.
A narrow track grand wagoner would be a decent swap. 44 front with a wagoner specific amc20 rear. (Your wheel bolt pattern will change)
Or depending on terrain that will be wheeled, jump to Dana 60 front and 14 bolt rear, or 70 rear.
Tip if you ask to many questions in one thread you will sometimes get 0 answers.
What terrain will you be on? since you are already thinking more hp one day you will probably have more HP so build for it now. You don't want axles to hold up to what you have the add HP then have week axles. Build once and right.
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