You're asking for opinions without submitting the data I've requested and frankly, I like to deal in facts. I can't help you if you can't help me. (and the underside of the hood should NOT be the same color as the exterior. It should be flat black. And with the custom deluxe interior, it should have come with the sound deadener.) So far there's nothing that confirms the car started life as an SS. The telltale signs haven't been posted yet. (axle code, speedometer hole, etc...)
I suggest you take a look at THIS LINK
and put together some prices, but offhand here's what I can see:
V8 Cylinder Coupe - $2,670.00
Vinyl roof - $73.75
Power disc brakes - $100.10
Bench seat - $32.65
Fold down rear seat - $42.15
Custom deluxe interior - $110.60
Headrests - $52.70
A/C - $360.20
Power steering - $84.30
Rally Sport - $105.35
So far you're up to $3631.80, but now you need to factor in any other options the car may have (i.e. deluxe seat belts?, tinted glass?, power windows? (can't tell from the pictures), AM (or AM/FM radio)?, bumper guards?, etc....
You also need to factor in tax, license, dealer prep, and any dealer installed options that may have been purchased.
How do you know the car was purchased for $4400? Do you have the original paperwork?