Mine are 5/16 headed screws with the clip nuts on the valence. I think they're original - at least they've been that way since I owned it - but who knows what happened before.
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Ken
'68 GTO - 464 - Ram Air II heads - 236/242 roller - 9.5” TSP converter - Moser 3.55 Truetrac (
build thread |
walk around)
'74 Ventura 350
'69 AMC Javelin SST