How is it??? My truck is a disaster. Stock 84 305. Lots of surging, no power, runs hot. Could only manage about 15 mph @ 10,000ft on a steep grade. Not sure how steep, it was a small unmarked backroad. I understand it is going to lose a lot of power, but my dad's explorer did 45 on the same grade. I'm pretty sure I hit triple digits coming down though. Just considering my options for when I throw this 305 in the ocean next year.