I used to view this giant hill as a challenge. At first I couldn't even make it to the top without stopping to walk the bike the rest of the way. I'll never forget the first time I pedalled the whole way! Victory!!! What kinda sucked was there was a stop right at the bottom of it, so I couldn't enjoy a 50 mph run down the hill and had to ride the brakes the whole way.
The six isn't going to help a whole lot. I mean, you won't suddenly be getting 25 mpg or anything.
As noted in my thread on optimal piston speed, the 302 is already chugging away at what is considered to be slower than optimal speed... (?)