Sirthump: I have the 3.3 Clarke tank on my bike. The tank came with a new gasket for the extra petcock on the kickstarter side (petcock not included). However, it didn't come with any o-rings for the stock petcock. You should be able to use the stocker. As far as the hardwear under the tank, you will have to use what is on yours. Now.... lets talk about how the tank will fit your blue beast. I hope that your mounting nuts for the "tank mount" brackets are located in the "STOCK" location. When I tried to attach the mounts, the holes didn't line up with the nuts (aprox 1/4" misalignement). You will also need to raise the back of the tank so it will not rub against the top of the rear shock reservoir. I used an extra piece of rubber from a tube I had to get the gap needed to make the clearance. Not wanting to put up with all this extra work to install my tank I contacted Clarke with all these short commings. There reply... "We know about all that. Put up with it or buy a different tank". CLICK. They hung up on me. Sirthump... lots of luck with your tank. Let me know if I can help ya out any futher.