RCU Forums - Please help identify

Here is a plane I feel is very special.
I have no idea of
1. What it is?
2. How old it is?
3. Who made it?
4. Whether it has ever competed, and if so by who?
5. Is it a 1 of 1 prototype for an Iowa based kit manufacturer?

I need some help, it looks like a kaos but due to where it has spent its life it is not possible.

Any input is appreciated
This plane I believe has been in Iowa its whole life.
It is built with amazing craftsmanship and is painted nicely over a sheeted foam wing…….
There is a rich history and great story to this plane, I want to chase that story down and need help to do it.

56" wingspan
Webra 40 on the nose with old Semco muffler
Has 2 tapped blocks underside for mounting I believe a float set

Any ideas??????
Thank You

https://cimg0.ibsrv.net/gimg/www.rcu...3f8623486.jpeg
https://cimg1.ibsrv.net/gimg/www.rcu...ec4c23afc.jpeg
https://cimg3.ibsrv.net/gimg/www.rcu...b58e890e1.jpeg
https://cimg4.ibsrv.net/gimg/www.rcu...7236f4924.jpeg
https://cimg5.ibsrv.net/gimg/www.rcu...2dad4380d.jpeg