Maybe it's just my bad experiences talking but I'd stay as far away as physically possible from any new Purple Shaft cams, I had 2 go flat in my 1988 Dakota project (one after about 10 miles post break-in and then the other during break in) and on top of that my friend had one go sour in his Ramcharger around the same time. I'm sure the older ones are fine but my first cam that crapped out was bought in 2006 or so and then the other two were 2010 or 2011. Just my .02