Yes you will need to cut off the stuffers ,which are the 2 rubber tabs sticking out ,you cant miss em . What you need to do is take the stock rubber manifold and the stock reed cage assy. Bolt it togther with a spacer {washer}in betweenn the reed cage and the rubber manifold ,so there is a space just wide enough to fit a hack saw blade between the too. The gap between the cage and the rubber manifold ,acts as the guide to make the cutting of the rubber tabs a easy task . You will use the stock manifold bolts and get some nuts that fit em 2 will work, 2 washers {spacers}. Now cut through the rubber ,until they fall off . Thats it now your v -force will fit perfectly 8).Also set the reed tension on low settinng , they come stock in high setting ,so losson the screws and slide the reed stop foward, there will be a gap at the top of the screw set. This setting will improve your bottom end olot more then in the high tension setting, try the two different settings it really depends on what you are looking for, but no matter what the v-force will incress performance in either position over the stock cage all togther. I hope this might help you out ,thats if you can decipher these so called instructions. {Decoder ring optional} 8) lol ... good luck n ride safe .........elsi_45