Install would have been very easy if I had these" http://wingstuff.com/products/35360-...-bolts-for-f6b ". HIGHLY recommend, although I did not have or use them probably add 20 mins to the install not having them turned it into a 40 min install, and I have rebuilt motorcycle motors. The taper ended with make all the difference in the world, also make sure you install which ever screw you decide to use, or you will most likely will strip the threads. Also get all 4 screw started before tighting any of them because you will need to readjust the seat holes with every screw, fun fun. hope this helps. It will be well worth it when done though.