The early cars are 7 gallon and I don't have the specs for the later. Even with 40 mpg 7 only gives a safe range of about 250 miles and there are places where if you happen to drive by a station somewhere near 1/2 tank you won't make it to the next station. Talking about traveling a bit west of where I'm at!!
Trevor, you have a point. If I were to fit the original sender I could let it go down to E in the bigger tank before needing to find a station!! I suppose just measuring the depth of the new tank and extending the arm to make a full sweep would not be difficult.
Kurt.