the overall price of the standard rings is cheaper but for 350 more that is a cheap 20 to 25 hp over the life of the engine . I agree with RAMM but this is just another way to look at it .
You're right it is a great R.O.I. but I feel that expensive rings are outside the budget of this build and a 5/64's ring is not likely to produce the same gain. I have a couple of other "tricks" up my sleeve--not really tricks just executing some known quantity's. J.Rob