Top Speed stock 5.7?

Getting a stock 5.7 Hemi to pull an Abody to 140+ MPH isn't that big a deal. My 68 BONE STOCK 383 4 speed coronet with 3.23 gears would quit pulling at 5700 rpm, or 138 mph. That motor was lucky to have 290 hp at the back tires. And it quit pulling because it ran into valve float, not lack of power. To me the big question is how to keep it shinny side up if you hop it up a little and put some REAL road gears in it, like a 2.96 or 2.76. I could see a tuned 5.7 with a stick trans and a road gear hitting 150 without a swaet. You just need enough straight road and bail money!