OK, I've looked into everyone's take on how to build the best 300sx. I've studied the BOB, WFO's project, and many others. I recently purchased a bone stock, nearly mint 300sx. My first impression when riding it was "what a turd!" Of coarse I'm pushing 190+ pounds. So I didn't expect it to be quick. But, once it got on plane, this was by far the funnest feeling hull I have ever ridden. I have had just about every OEM ski at some point and a couple aftermarket hulls so I know my skis. This thing is right at the top. I managed to barrel roll it several times off a boat wake but it couldn't pull me out. Of coarse, this ski has no power at all. To top it off, it has a lousy 440 pump designed for high rpm. What the BOB guys did was great, what WFO did was pretty cool too. What I wanted was something a little different. I wanted a ski that can do a little of everything from surf to flat water to jumping wakes and hood tricks. What I didn't want is to drop a big heavy engine into this thing making it no different than an FX-1 or a 550. This hull has tons of potential but some severe limitations as well. First there is the issue of power. I have read a lot about the 300 motor and wondered what kind of power it can actually produce. The 300 produces 30hp. Compared to a 440 that has 27hp and a 550 read valve makes 41hp. My old 550sx actually produced a ton of power with only bolt on mods and was a lot of fun to ride. Not to mention that ski was almost 35lbs heavier. Also, the 550 hull has much less lift than the wide and super light 300sx has at only 210lbs. The porting and compression are nothing special so there seems to be room for gains there. The Carb is also very small and the old round body type. My goal is to get 45-50 horsepower. If this takes porting, high compression and high octane fuel, so be it. This thing sips gas so I have no problem paying a little extra for some 100 octane avgas. So far I found a really nice Kerker pipe, some Boysen reeds and have a 38mm square body carb laying around. The next issue is the pump. I can make hp all day but with that 440 pump it will never pull me out of the water like I need it too. I tried the 550 swap but unfortunately, the 300sx has a specific drive shaft and mid shaft housing that doesn't swap like the old 550-440 swap. So, It was time to think out of the box. The last thing I wanted to take on was another FX-1 style 144 conversion. I did that 2 years ago and while it turned out great, it was a nightmare. But that's just where I got a bright idea. I basically had a worthless but mint condition FX-1 pump laying around from the previous conversion. With a little mock up, I found it was quite simple to bolt up the FX-1 pump and shoe to the existing pump cavity. There would be some obstacles but I had tons of parts laying around and was completely confident I could make it happen. So, I have completed much of the project to this point. In the process I have had to fab up some parts, destroy others, and do a lot of measuring. The drive line is complete. What's left now is the motor. I will be posting all my picks up soon. I took pics all along the way. I will be working on the motor this week and hopefully have it water tested by this weekend.