^Maybe slap the wet kit on and run on the stock 3.7FD as I would assume 4.08 gearing may potentially introduce traction issues once you up your jetting into 100-125-150 range. It is a foregone conclusion that you will be bored of 75 in 5 passes or less.
If it was me, start jetting @100 and get pro tuned on dyno with Uprev Tuner ver. Then tweak that base map as you move upward. My .02.
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Nitrous Outlet 57N 33F +NANO = 349whp/353wtq
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