People on this thread are trying to help you but you continue to refuse the help. When you asked about gearing everyone told you that today gearing is done by calculating rollout, help you refused to accept saying that it doesn’t matter. You’re asking about converting your car but you also stated that you’re not completely sure if you have a 12r5 or 5.1, so how is anyone going to be able to help you when you don’t even know what you have. If you keep ignoring the help your getting people are going to stop taking you seriously.

Because I know where you’re going to run this at; and you claim to be on a tight budget; I can say with confidence save your money and just run the car as AE designed it. There is no point in spending money when the total turnout is 4 to 5 cars once a week on a marginal surface. If at some point in the future SRS is somehow able to take their heads out of the dark and turnouts grow, that would be the time to consider upgrading the car.