Talked to the owner. No original drivetrain. No buildsheet on the tank. FW ralley wheels.
VanNuys cars are hard to doc. Too bad there isn't at least 1 original driveline component. Kind of kills the value.
The color is desirable though

3/8 single fuel line is a good sign. Looks original to me.
Looks like all the cowl induction stuff is there looks original.
Spring Tag YF are 302 springs.

Tach is z/28

Jerry seems to think it is. I think there is enough there to make me lean towards a real Z

Hole in firewall?