Top Speed stock 5.7?

Trap speed calculators put my stock engine (+headers and Mod Man) at around 290 rear wheel with my Megasquirt setup. I'm still spinning the tires on launch, so it might have a little more in it that's not showing up on the time slips, but I do know that it runs side by side with my mom's 99 Vette from a rolling start. Given the weights of the cars and whatnot I figure it to be around 350 at the crank.