I bought 2 of these for my boys and not too impressed with their instructions. I even called OFNA to bitch about this issue. First the plug that comes with it states it's for 1/10 .12 engine plus the plug has 2 copper gaskets. Now I'm still new at this and found it a little confusing. I was going to go through the buggy with my boys and the instructions give no measurements when it comes to the front suspension. Don't get me wrong the car looks good and built well but if this is intended for a novice it should be more informative. I bought a Losi RTR last year and found it covered everything and was well thought out. Once more proving you get what you pay for but I'm on a tight budget.