I recently bought a 65 2+2 Fastback 289 4 speed, C Code.  The car is maybe a 6 or 7 out of 10.  Almost all stock.  I paid $13K.

If I add white Shelby Stripes to the Caspian Blue Color, a wood steering wheel, hood pins, and the factory fog lights to the grill, will I be adding value, or detracting from the value of the car?  

Hay vlgillespie - I don't know how many 65 FB C code cars were made or are still out there but, other than the FB (I would like one myself - I love the earlier FB stile) it seams that you have a vanilla car. I bought a 68 FB for 3,100$ that I did as a restomod. I sold it after five years (I didn't have an emotional attachment) for $8,500 and thought I did well. Other than the paint I did it all myself. Bottom line, if your planning to keep the car for a long time you should build the car the way  you want it to be so you can enjoy it rather than saying "I wished I had" 10 years from now. You can do a lot to the FB that will make it the car you want without making changes that can't be changed later if desired or needed. Make the car you want to drive. The purists out there will tell you to keep it original but, as most people never make back what they put into it you might as well enjoy driving a car that you fell you look good in. Just one guys opinion!  

I couldn't agree more scott.  Besides, the things you mentioned are all reversible (with some work)  so they can be changed back later on if it becomes an issue.  I have seen people cut in sun roofs and speaker holes into the doors. I wouldn't go that far.  But there is no problem with a few simple cosmetic changes.  

Thanks to Scott and Lethal.  Any other opinions?  I appreciate the feedback from folks w/ more experience than I.  I am a newby to these Classic Cars.

Monty