I haven't seen Larry or the Sonic in years. First met him long ago when we raced at US131. He picked up the idea quick that there is no replacement for displacement as those Sonic motors were I think 705cu.in. with carbs and the boat was around 10k pounds so there was some good torque to get it to triple digits.
I know he is still in K-zoo doing real estate dev. and still races cars. I heard he had a hard crash at Daytona a few years ago but still keeps it going . Have a friend that has a biz around the corner from him in Portage so I will see what I can find out as you got me curious also as to what ever happend to the boat.