How's it going,I may have a partial solution? Did you convert the car to a 5 speed? Did it use to be a 4 speed(toploader or T10)? If so and you still have the pieces. I would be interested in trading for,or buying the stock shifter or pieces and possibly the trans (if it has the right numbers) For a car I'm working on right now. Let me know.
BTW. I noticed your current shifter doesn't say "GO BABY GO" on it ....LOL...... I'm kidding.
On a serious note I know a ton of classic Mustang and Shelby people so if you have a pile of leftover stock takeoff(the 67 steering wheel,the 68 G.T. Rims,etc.) parts that you would be looking to sell or trade.Let me know.Thanks.