I ran there this April with my RT-10. I was allowed to run in A1 class (up to 180 mph) using the factory bubble top. I am pretty certain that they will require a roll bar in yours. I went in 179.2 in the mile and a half, so if you were at 161 in a half mile you would likely run close to 200 there. It is a fun event and they have very good safety rules.
Here is their website http://www.mojavemile.com/ . You may have to dig into the rulebook for your car which I believe will run in class A2.
Good luck.