Manhattan Beach is 25 miles north of Brainerd - though I'm in Omaha most of the time of late. Dunno about the track. I assume its in great shape. They have tons of high profile events there each year and have put a ton into development including on track condo's and the like.
We could check the calendar - either hooking up with a porsche club event or another open session.
Here is a link to last years calendar.
http://www.brainerdraceway.com/indexhtml.html
Are there any "good" racers in MN?? I've done some autocrossing but not in the cobra and am more than a little rusty...........:-)