'70 Duster, Original Paint Project
 

Looks like some rust near the battery tray (?) but overall, this looks to be a largely rust-free Southwest car with original paint. Although it has a 318 and 3-sp manual trans, it would be a great candidate for a 440 or Hemi swap....

Link to 1970 Original Paint Duster auction

https://i.ebayimg.com/images/g/GX8AA...Yc/s-l1600.jpg

https://i.ebayimg.com/images/g/zDUAA...XN/s-l1600.jpg

https://i.ebayimg.com/images/g/JwMAA...Yp/s-l1600.jpg

Reminds me of the Roadkill "Crop Duster". Very cool.

I think I'd put a strong 340 in it and call it a day. Leave it as a sleeper.