I am going to have a hard time not calling them shark fins now.
I can only imagine all of the guys from the rental places see, distruction to parts swapping..,like back with Hurts rent a racer mustangs, people rent and then swap motors!!
I build a lot of atv and dirt bike motors for local people...well I build banshee with a 4mill stoker and dune port, the guy was happy with it an rode it for several year...got into some financial trouble and sold it...next owner calls me up as says you build this motor wrong and it blew up, you need to fix it for free....excuses me! Well I calmly talked to him for a bit(he said it blew up fist ride just out of the parking lot) I told him it sounds like you straight gassed it. I said are you sure you now how to mix gas? He angrily responded, I have mixed and ran five tanks though the bike!!! Ohh I see...so not the first tank, plus I build the motor for someone else and he rode it for two years. He straight gassed it for sure, plus he was an idiot and when he took the top end off to show me, left antifreeze in the crankcase for three months and it looked up the crank!!!!