Gnna ask a dumb question. Is there any other trans that will bolt up to the miata engine with little fab work? Mines gone and miata trannies are hard to find right now. Maybe an rx7 gearbox? Or something else?
Well I said 300hp because you'd probably spend a couple grand getting a different transmission in there properly. You could find a 6 speed miata trans for $600-700. A 5 speed should be 100-300 depending on mileage and condition. It just doesn't make sense switching unless you need it.