WHAT WOULD YOU DO ?

It sounds like it’s 4.000 by 3.79. Ive never seen an affordable 3.75 stroke crank.

So that makes it 377 inches and you are short on induction for that geometry.

I’d run the cross ram, but I’d buy better carbs. Those are worthless. At a minimum 2 Pro Form 650’s. You can at least tune them and they won’t cork up the induction too bad.