RPM's

Mighty short tire. Your effective gear ratio is probably around 4.30.

Ouch!! I dont like the sounds of that..

2004R all the way!!! My cruising RPM dropped dramatically. It's not that simple as that but it worked for me.

Treblig

That isnt in the cards for me right now, but it does intrigue me. Perhaps in the future.

The tire size table shows them to be a 26" diameter tire which is a little bigger than my 245/60/14 . I would suggest playing around with the tremec calculator that uses gear ratio and tire size to compare RPM , your mileage still should be better than 80 miles a tank thats like 4.8 miles to the gallon , how black are your plugs ? Are your neighbours sucking on your tank at night ?

Im open to suggestions on tire size. I actually had the plugs out this past weekend and they appear to be burning very well, and had good color to them. My timing might be a bit out of adjustment, but I doubt that would make a world of difference. Oh and I wish that was the case for the gas tank, but it stays parked in the garage.