I am the current owner of K/Code 5RO9K165841. I just wanted to post the info I have regarding the correctness of the car.
Before purchasing the K/Code I had a close friend and avid Shelby/Mustang collector "Rick Costa" of Orange County Ca inspect the K/Code. He is respected as a go to guy for all questions regarding Shelby's and Mustang K/Codes. After a close inspection of the car he found the block to be correctly date coded and to have the correct vin# in the correct location. I have the original registrations on the car back to 1966 and have it verified under the best in the industry that the K/Code is as correct as they come.