I'm good to go then. I will say it took me two days (4-5 hours each day) to install my UP, and remove and gut my stock DP and get it all back together. Of that, the DP only took me 1-2 of those hours, the remaining time was spent installing the UP. With that said, I've got access to all the right tools, spark plugs should be no problem for me from what I'm hearing.