Nice to hear from you Mark. Still never seen anything like those crazy proto grp crank mods you did.
My favorite mod engine still to date was that Grp .28 that you did the crazy crank to. It sounded like a turbine engine running down the straight and ohhhh was it thirsty. My pit guy needed another qt of fuel in the 30 min main. I had just broken it in and had little idea how to tune it (I'm sure it had more in it). I told him to pit at 10 mins and it was out of fuel at 6 min. What a blast to drive it turned heads down the straight with that turbine sound. Isold it to an oval guy that said it was a rocket.
Enjoy