Just came across an article on allpar about the wire car. Joe Pappas was quoted as saying both the wire car and the yellow Duster went to North Carolina by the end of 1974. The wire car was mostly finished but never painted because Chrysler backed out of Pro Stock.

https://www.allpar.com/threads/the-mopar-missile-“the-wire-car”%C2%A0-1974-plymouth-duster-drag-racer.229275/