Parts acquired through a few estates partially inspired me to look into these riggers. In the last few years read and watched fellow boaters run their 21 JAE riggers in pretty good size water. This finally convinced me to get serious about this. Called Mike Walker up to build my JAE GT. Also ordered the hardware kit with the rigger also. I used most of the parts in this kit so I would say it was a very convenient purchase. Currently using the 8oz tank (6oz was a stretch). The frosted tanks are lighter and more rigid than the clear more flexible tank. The metal tanks were just too heavy. If they provide a benefit, that's a decision one boater must make...weight over performance. Hood cowl, just to hold down the tank. The cowl was too heavy. Besides, if you are careful not to drive through (or being a victim) of a complete hose down, the motor will amazingly continue to run. Aside for the motor, header and pipe I used all parts from the hardware kit. Yes, even the TFL 1450 prop that comes with the hardware kit! The rigger planed and drove like a dream. Adjusted pitch and cup to this propeller and gained a few more mph. Rigger also works with M445, x445, and x645. You'll notice if you raise the strut, you'll lose drive...especially through the corners. Typically, if you blink entering the corner, you' open your eyes exiting the corner. At about 65mph, you're going to have to put your cigarette out. Biggest tuning change to the boat was a pipe change. Ran a lot of car pipes. Didn't really care for them cause they got me all oily. Then I realized that you could run the pipe on the starboard side! Didn't take enough notes and performance wasn't significant enough to continue using those pipes. Forgot to mention that I did run 17xx-xx-xx series propeller successfully. In my experience they required more work to get them to load the motor system properly. Best prop to run with my 21 JAE GT with road car motor...octura x645. 69mph heat trim. 60% nitro. Still got a lot of stuff from the estate still to try. I am currently revisiting set ups that I have tried but with different combinations. Yes, even the car pipes on the starboard side!