Another flywheel question.

hi, normal flywheel diameter is 13.25 inches for 130 tooth wheel. std for A body small blocks.

Not doubting your word, but can anyone else verify this information?

I am building a internally balanced 408 and will need a flywheel. I need to know what flywheel to start looking for?

I found this flywheel on Summit's site for $68?!? What do you think of it? I know it's not SFI approved, but is it really junk compared to using a 40 year old used flywheel that isn't approved either?!?

Zoom flywheel

Thanks!