Tony, you should be able to unscrew one of the eyelets on the turnbuckle, and screw the stock shuttlecar bolt into the turnbuckle. Thus, not needing the one eyebolt and the clevis. One thread of the turnbuckle is right hand thread, the other is left hand. So use the right hand thread end LOL If that's not long enough or wont work for some reason, you can get whats called Coupling Nuts. They are approx 1.5" long, and threaded inside. You can even get them mismatched threads, say 5/16 on one side, and 3/8" on the other. they are specifically for joining threaded rods together
