numbers match question

on a 69 Coronet 500 - 318 904 8-3/4 car that needs a resto. The car is all there but it has new Quarters put right over the old Quarters done years ago, the motor leaks and is weak, But the floors and int is nice. Has aftermarker wheels, headers, intake & carb. On this car my question is:

Would it matter on value of the car, up or down, if the transmission was not numbers matching?

(I know my awnser to this question, I would like to hear yours) :violent1:

First off the car was a 68 Coronet 440 with 500 tail lights and tail panel and was starting to do an R/T clone. The car had the original 1/4s with some mud in lower portion both front and lower portion of the panels. The car did have the original drivetrain and the original 2.76 gears in it. To go further the car still had the original vinyl top, original dash pad, original steering wheel. It had one repaint and I was fighting myself that maybe I should just go back to stock.