A few things I thing will need clarification
1- Instrument Panel & Instrument Cluster ?
Are these the gauge bezel ?
Should one be "Dash and ash tray surfaces"?
2- Glove Box Door
Does this every change? All are low gloss black on the back side
3- Rally Pac
Opening a can a worms considering dealer or factory installation aren't we?
4- Door Lock Knob
Might want to leave that one off starting in 66 - since they are all the same finish
5- Console Trim?
What is this and how does the color change based on interior?
6- Seat Bolster?
7- Seat Side Shield
Again does this change?
8- Foot/Heel Pad
Would this include shape, use or color? Might leave it off
9- Convertible Top Bows & Header Seal
Again since they don't change their elimination would clean up the spread sheet and get rid of some columns that would just be all the same
Just some thoughts and input