Gas gusler van update

Ran the van down the highway today to check some MPG and Performance. I had previously run almost a tank of gas out just running around town .checked MPGs on that and if came in at 15.7 with the new slanty and 904. I was very pleased with that , so then hit the highway with a full tank headed north on I 75 for about 50+ miles @ 70 MPH (kinda felt like the sweet spot) turned back and fill her up again and came in @14.6 MGH, not to bad but with pulling my bike on a small trailer I"m not sure it'll have enough balls to pull a big hill much less the rockies. It has 2.94s in the rear now, may look for some 3.23s in a while. But over all I was pretty happy with it ,no overheating, it was like 94 degrees today, no leaks .