Hi Shawn,
I have the same kit, it belongs to my Brother-in-law. I purchased it 40 years ago as a Christmas present, he never got around to build it, so now I am going to enter it on e-bay.
At the time of purchase I found out that Casadio had gone into liquidation.
The only other kit I have found any information on was a german WW11 fighter. It sold for £70 plus & packing.
I have not heard anything about the moulds being aquired by any other manufaturer.
Casadio also made a series of racing cars, the castings were absolutely stunning.
Sorry, that is all I know.
Regards.
John.