Barracuda 383/auto - swap to Stick hurt the value?

Putting together a '67 Barracuda Formula S 383/auto car for a driver. My plans are this summer to put a Gear Vendors overdrive in but I am now kicking around throwing in a TKO 5 speed. A Tremec is a lot of fun, I put one in a '70 Barracuda about 12 years ago & it made a nice driver.

I just don't know about cutting the tunnel & all on a real 383 car. As far as value I think it would be worth more as a stick since it's not a restored & 100% stock. Probably my fenderwell headers hurt the resale price more but I do have the panels that were in it.

Any input?
I had the same dilima, I have a 68 383 suto and I changed it to a factory correct looking 4 speed set up. I kept the tunnel cut and shifter set up that could go with the car if the next buyer wants to convert it back to original. I really enjoy the 4 speed and from the people that I have talked to I don't think it hurt desireablility at all maybe made it better. If it was a low mileage documented cream puff probably not, but a driver I say do what you like. At this day and age of 60's muscle cars I don't think it matters. Enjoy them to the max, the next generation will only see them in games on their cell phone.