I too would buy a assembled gauge pod. AAW sells a console gauge to non console wiring harnes. Its not plug and play though. The kit bypasses the fuel gauge, and the wiring goes through the firewall to the engine compartment. The instructions will get you where you need to go, but read them a "few times" before doing anything.
1969 x-77 Z/28 orange/ white stripes, named by my daughter "Clementine ", M-22 close ratio, 4:10 12 bolt, CE 302. Hugger orange with white stripes. White standard interior. Restoration complete May 2018