Thanks for the input. Guess I'm stressing over nothing. Got a higher end, billet, 9 keyway timing set. With this new set lined up on the the "0" marks the cam centerlined @ 108. Adjusted the sprockets and BOOM... right on the money, 112 as desired.

Later, Sandy '70 HEMI Road Runner B5/B5, 4 spd "Sandy's Garage" on Facebook