I understand, but how much will you have into the modification. Shaft change, ends if they aren't the same. Rebuild, maybe valving, shipping. You might be money ahead by selling and buying new. Who knows... I can't even pick out a helmet I like, that's way too many decisions for something that isn't suppose to be stressful.
It's a vicious cycle. Then you throw tracks, drivers, turbos, clutch parts on top of it too. Yikes.
This^^^
Every single thing sled related.