If I may make a suggestion --- I don't think you are going to be happy having to do all that work to build a car that your wife wants, rather than the car that you want. It's your car; it's your project; and there are very few of these cars left, so you may never get the chance to build another one. Why not just tell the wifey that you are going to build it your way, and that she should just butt out and get her own project?
you have a valid point.. but she is the driver of this car.. i am happy just having another car in the herd.. i have built many many... many cars.. mostly more of a muscle car era 1965 ish to 1971 ish type cars.. I am ok changing gears and doing it this way.. plus.. there just might be a couple of performance upgrades (wink wink)