Ford 302 flywheel bolts,longer ones from?

Hi I need to use a spacer behind the flywheel ( Not ideal I know), only need to be by 1/4" to allow the driven plate full contact on the splines.
I could possibly get away with standard ARP jobbies, checked Summit & have Googled - but no joy, any suggestions ? thanks
Stock is 7/16 X 1".
 
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