I don't thing this applies because there was no puddle but FWIW
regarding the A904 in his '66 Barracuda @CPDave wrote: The main issue I've had was with the '66-'67 pump drive snout on the
converter cracking (Holy Red Puddel of Death Batman!). Solved that
by upgrading to the '68 and up front pump and a hybred late pump
drive/small pilot converter.