A friend and I did my Billet shifter in 3.5 hours. Not a Hurst, but I imagine the process is similar. One guy in the car, one guy under. I couldn't imagine crawling in and out that many times. I'm not a mechanic, but change oil.
This is a great install guide
Install Billet Products Short Throw Shifter
I haven't had any issues popping out and all has been well for 6,000 miles.
