Found this fuel cell install how to

pretty neat/some useful info in here

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I was wondering on fuel cells if you could still use your stock filler cap, and here they did it. I was afraid I would have to pop my hatch everytime I needed to fill up. Too bad I dont have all that fabricating stuff. I do plan on running either a 12 gallon or 16 gallon tank though.

Why not keep the stock 22 gallon tank? I wouldn't want a smaller tank in this car...

Yes , what Doc said, with a modified V8 I wouldn't want that little of a fuel cell. You could pass everything except a gas station..........

there are very little to no benefits for removing the OE fuel tank . the only place you can realy put a fuel cell is were the spare tire goes and thats not a good place to install a fuel cell . why ? 1st its past the rear axle line and 2nd if the car gets into a ass end crash there is not much room for the rear body panel to crush in before it gets into the fuel cell and 3rd then there is the size of the cell that you can install in the space the biggest cell you can go with is a 10 gal. fuel cell . thats fine if your doing 20 minute sprint races like we do in road racing but forget about it when it comes to street driving . the foam in a fuel cell does 2 things the 1st is it slows the leak down when there is a crash and the cell gets split open and the 2nd is to stop the 7 LBS per Gal. of inertia of fuel slosh in the fuel tank/cell . stopping the inertia is a good thing when it comes to cornering because it makes the car more stable in a turn . but the 944 stock fuel tank with its sadle design has very little fuel slosh so it does not upset the balance of the car when in a turn . then there is the weight of the fuel . with the weight past the rear axle line using a fuel cell it defeats the hole purpose of the foam in the fuel cell because you have just moved the 7 LBS pre Gal of fuel weight higher and far to the back of the car making the handling worst from the pendulum weight . the 944 has a very good fuel tank design being a sadle type tank and being infront of the rear axle line .

never know that the tank was 22 gallons. I was thinking about the size and weight, plus the flow of a fuel cell at high speeds.

The saddle design does make some sense though, I was wondering why it went over the transmission like that.

Off topic some, but what can be done to the OEM tank to restore it to a better condition if it needs to be drained and cleaned to make sure not gunk from sitting is going to get sucked up?

wow...unnecessarily tough croud

i have a great reason: so i can run a square tank above the transaxle that doesn't block a passenger side exit exhaust. Relocating the dual exhaust to run to both sides instead of just one would allow me to route the exhaust OVER the axle on both sides, improving ground clearance. It would also look badass. Plus i have some serious slosh issues, don't know why you don't, but my gas gauge gets all effed up when i park on a slight angle left or right, or up or down...and i can hear the gas slosh in the tank (well i used to be able to before the new exhaust) when going around tight corners.

Keep in mind that you'll be moving the gas higher up in the vehicle, which is going to have a majorly negative impact on your handling. The higher center of gravity is going to more than negate any "fuel slosh" issues you're solving.

Definitely not worth it for a second exhaust tip.