[jordan]

I thought unorthodox flywheels stocked the aluminum opel flywheels now?

 

[jordan]

Do they actually make the ring gear as well? Yes $325 is a very nice price for this amount of material and machine work.

 

[jordan]

I don't recall from having looked at the aluminium flywheel, but is the steel friction insert above the aluminium flywheel 'body'? If it isn't then it is a problem, if it is recessed, it is a bigger problem. One option other than the obvious attempt to return and purchase an actual 9" disk would be to carefully (I know you can do that) scribe and grind away the excess friction material, I would leave the remaining metal lining. If this was more than .125" off I would not attempt it, but with the weight of that material carefully removed should not alter balance to a noticeable level.