Who ever did the work is simply ripping you off and also ruining a good car. Sounds like you've already dropped alot of money into this project. I'd make it well known not to do business with the guy who did this and even take some sort of legal action to get some of your money back.

To do this car properly, if you can afford to, you need to put full 1/4s on it. Basically calling Auto Metal Direct (AMD) and having it shipped. I know its big bucks to probably do that. If you want your car to be nice, you mine as well order a new 1 piece floor pan and the trunk drops too.

I think the car is in worse shape now then when it was started.