Need Engine Help!
 

I was looking around at engines before I went out and bought a MP, that way I could have an idea as to what I want to put into it. I sombody suggested a CMB engine, they said it was silly fast. I found CMB engines at nationalrc.com for a good price, and when I read a little more into them, I was even more convinced. Problem is, the more expensive one take turbo plugs. I don't know much about those, are they good for a big truck like the MP? What exactly is the benefit of them? Where can I buy some online, and what kind should I buy? I also noticed that CMB said the cheaper engine was a short stroke engine, while the more expensive was a long stroke. What is the difference here? Which one would be better for a truck like the MP? Thanks for any help.