Greg...I have Corbeau seats in my GTX. You are absolutely welcome to sit in them and drive the car and see how you like them. Personally, I think they are every bit as comfy as the SRT seats in my Daytona. They have a "deeper" side bolster to hold you in on the tight fast turns too. As far as their mounting brackets, MAJOR modification to get them to fit . I learned some by getting them to fit and I would be happy to share that with you if you go that way.
Give me a call, I will be around on Sunday and will drive out to your place if you want.