Hey guys, New to the forums for posting been lurking for awhile lol. I recently acquired a 4 seat sand rail powered by a busa engine. Looks like the rail was originally made by sonic sand cars which from what I've seen had a checkered past possibly. I live in Central MI and frequent Silver Lake a lot. The issue I'm having is I lost 2nd gear after this past weekend of playing and after some research seen its pretty common on these hayabusa trannys. I have done tons of looking but unfortunately haven't gotten any solid answers so I figured best to just post and ask some experts. I see these setups are typically in single/dual seat rails. My issue is do I spend the $700+ and then shipping cost and time tearing motor down and getting race cut gears to prevent the slipping in future trips or spend the money on a 2D. I'm worried the weight is going to be a constant issue and I will keep breaking trannys seeing how when fully loaded I may be upwards of 1500lbs over what that setup on a motorcycle was designed to run. Other issue is if I do upgrade to a 2D what am I good til. I see what is recommended for weight and power on different charts. Realistically mid 300-low 400hp is what i plan on either a turbo K series or EJ25 or even a stock 5.3 just because they are cheap and easy to come by. Biggest issue is I read so many different things it seems to all contradict each other then i see plenty of LS rails running the 2D in classifieds. Any input would be great I was super excited to go from a truck to an actual rail but trying to figure out where to go next i swear is giving me anxiety lmao.