Thanks! I knew about the gst with the .28 , I will most definitley be purchasing one of those. The guy at the lhs must have gotten his information crossed up. I do want to buy GST 7.7 so I thought I would ask. How do you like your Matrix truggy, I cant wait to start building mine, I am in the process of gathering everything I need. I am still up in the air about what engine to get, I am thinking of the rb products or the radical 628[8D]