Tough decisions Jeff! I think you need to be honest with yourself regarding your financial situation and what really turns your crank with respect to the car. If the car had some T/A history with a crossram etc. I would definitely think twice about selling the crossram set-up. However, if it was a street car for its entire life I would restore it to its original, as-delivered to the dealer condition. The fact that it's a numbers matching, documented JL8 is where the value and interest would be for me. If you sell the '68 what are you going to drive for fun? I doubt you'll be putting too many miles on the JL8 from what you have posted about it. Just my thoughts, good luck with your decision