IRS in split bus best suby transmission gearing

Now that I have the cooling system functioning well Im planning to swap in the ej 22 turbo into my split bus. Right now I have a ssp 3.88 in it and would like to lower the rpm a bit as i want to be able to cruise at lower rpm . My torque app says 60 mph at 3100 rpm Im running 195/60/15 tires . I may put some 205/75/15 tires on before i Have a transmission built. thx for your advice Al

Hi Allen i wouldnt be looking to lower the revs...EJ22 is redlined at 6500 maybe your turbo more...my gearing give me awesome speed in third...great fo overtaking at i'm doing 3000rpm at 60/100kph in top