FRAME CONNECTORs FOR 66 Barracuda - HELP

SOMEWHERE ( and not over the rainbow )
I saw a set of early A body frame connectors, production type( not custom made), that had the unusual rear shovel shape to fit around the rear flooring of the 66 Barracuda and for the life of me I cannot remember where?!?!?!? I
could have sworn it was at Mancicni's which is right down the
street...called them & asked if they had them in stock....."never heard of
them!" was the answer!!! Holy COW?!?!? my cheese is starting to slide off
my cracker!!!!??? OLD age hallucinations? I dont think so.... Damn it...I
KNOW I saw these things and if I saw them somebody else must have too.....
Send me a link or directions or a name and I will take it from there.....in
the meantime I will still be searching.....I have a pretty tight deadline so
I can use all the help I can get PDQ
Z.