whats this thing worth?

1000 if its a rat
2500 if its decent and has an 8.75 rear
3000 if its decent and needs nothing to be a driver

add 1000 for rust free
add 2000 for nice paint and no bond
add 500 for nice interior

-500 for green, gold or brown paint
-500 for non body color engine bay
-500 if it still has the 7.25 rear

Unless it has been changed the 1974 never had an 8 3/4. It would have drum brakes on all four corners if it is a factory 7 1/4.