78 El Camino / restore or sell as is ?

[Brun]

I have a 78 El Camino 305 V8 with 125K on it. Engine purrs.
No rust, very minor dents. Frame's perfect. New tranny 3yr ago but it's been sitting & the tranny now needs a front seal. Windshield probably needs to be replaced.
Overall, this vehicle is easily restoreable.
I'm moving out of state and need to get some cash together, but I could postpone the move briefly if it's worth it to put up to $500 into it to dramatically increase it's value.
What do you all suggest.