anyway, not to step on toes here. you need to do this in a controlled environment. I had a couple of deputy friends giving me the go ahead for my mile run....it just turns out what we thought was a true mile wasn't. It was 9/10ths of a mile, but it didn't matter, that was shut down time. some old military base with a 3 mile runway would be nice.......just be safe....140 is a simple jump for me, but mine isn't all stock either...so who knows...be safe....