What size front drag tire to use with fender well headers?

Thanks everybody for your input. I just purchased one of Percy's WheelRite Wheel and Tire Fitment Tools. I figured since I have to use this tool to figure out what the biggest slick I can fit under the rear, I'll go ahead and use it up front also. I will post later what I ended up with in case anyone else uses this thread for a referance.
Thanks again
Hope all have a blessed day.
TAZZ