Sounds like you have some subliminal issues going on with the 69 Camaro. A good way to solve this is to have lots of picures of 1st generation Firebirds all around you. Go to any and all web pages with pictures of Birds. You need to purge this Camaro fettish.(lol)

Seriously, welcome!
The power window conversion is not too bad. You have to drill some mounting holes for the hardware. The good part is GM made dimples where the holes need to be drilled. Another good thing is you can use your original door panels because the power window swithches cover the window crank holes. The handest part about the conversion is buying the kit. As you already know, it's not cheap. Good Luck!
Jim