I suppose it's a personal preference, but to me, the octane rating isn't what's important...it's mileage!

with a difference of .20 per gallon, a 15 gallon fill up is only $3.50 different with regular vs premium.

no matter the price of gas...premium is always .20 higher than regular...at least here in Ohio.

so, $3.50 more per fill-up. if I can't manage that once a week...then I shouldn't be driving any type of toy/fun ride at all, and need a 35+mpg economy car.

now, getting 10 mpg or 15 mpg with that 10 gallons is a huge difference in operating cost!


Good luck on your build though..this sounds neat...500 hp daily driver on 87 octane!