Huh, I'd always thought your smaller displacement engine should get better mileage than the 5L in the 500SEC. What kind of gearing does your tranny have, and final ratio?
I'm not sure what mileage my 500 is getting, but it's only run through about half a tank, and now it needs brake work, exhaust work, and while I'm at it, I think I'm going to go ahead and do the MS conversion, so I'll never know just how bad the current mileage actually is.
On the topic of the conversion, I just picked up most of the plumbing I needed for the fuel system from a local hydraulics shop. Massively over rated fuel hose, rated up to 1500 psi working pressure...
The nice part about working with hydraulic shops is getting fittings that will hold up to just about anything, and look like they were intended to be in the engine bay from the beginning.
Instead of the bright red and blue aluminum AN fittings from the race shops, the steel JIC (same as AN, just meant for hydraulic use) are either the shiny silver of stainless, or a mild yellow of cadmium plated steel.
That being said, I think I paid as much for one of the fancy fittings in what appears to be stainless as I did for most of the rest of the plumbing combined! :P