The instructions for this are very good. I noticed a few things when I installed mine and actually talked to Dale about them (very nice guy, will answer the phone and talk to you with any concern). In short, watch for these items. When removing the float bowls on carbs 1 & 4, use a good quality, sharp screwdriver. These little screws are soft and are stuck in pretty good, careful not to strip. The bowl covers hold in the float hinge pin, very tiny little part. Your carbs will be verticle as you don't need to disconnect the cables (instructions show this). However, be mindful of those hinge pins as they can fall out. Last, the ignition advancer is press fit so be sure its on straight. Turn the rear wheel to turn the motor to make sure it runs true and doesn't strike anything. Other than that, very easy.