Welcome aboard Russ!.
Regardless of build sheet info, is it sure this car was delivered new as a Hult or Thorstad car?.
Also regarding the 608 Washington address noted on the build sheet, was either the Hult or Thorstad dealership ever operating at this address or was it perhaps a billing address/offices?.
Best of luck finding your Dad's LS6!.
[img]<<GRAEMLIN_URL>>/beers.gif[/img]
~ Pete
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Zone # 61
Dealer # 297
Dealer Name: Hult Chevrolet, Inc.
Address: 11011 W. North Ave.
City: Madison
State: WI
Zip: 53226
* Name changed to Thorstad Chevrolet in September 1970 when they moved to 1702 S. Park St.
Clarence Thorstad bought Hult Chevrolet in 1965, but Chevrolet wouldn't let them change the name until they built a new building (info from NCRS Site)
Zone # 47
(Prev. Zone 11?)
Dealer # 628
Dealer Name: Thorstad Chevrolet
Address: 1702 S. Park St.
City: Madison
State: WI
Zip: 53714