mixing years

I will be using a 68 upper valance and associated plymouth emblem on my 67 notchback, i like it better than the seperate plymouth letters. I will also be using 68 up window cranks, 68 up armrest pads, a 69 flip fuel cap. I think these look much better than the 67 pieces. Also using the 69 up reverse indicator light in the dash, and a hurst shifter,, and assembling the car out of all different years of parts, so really who cares as long as it looks good and works.