XRAY - Model racing cars

hai, i just wondering if this engine OS SPEED .21 VZ-B V-Spec NEW Alloy Head is the same as the os speed 21 vz b world champ?

http://cgi.ebay.com.au/O-S-13893-Speed- ... dZViewItem

http://cgi.ebay.com.au/ws/eBayISAPI.dll ... :IT&ih=014

because i heard that the world champ edition now come out with the alloy head but i am not sure if the link above is the one i am talking about

same engine, just different cooling head. For what it is worth, the regular speed (mag head) is the fastest engine I have ever seen on a track - incredible bottom and mid, and a good top end...the thing just flies...I raced against two of them last week and they were faster then my Max power m5 and any other mills on the track (rbc6 included). They are wicked engines..I would run them with the T2050 pipe also..

I am new and have the os .21vzb v spec the one with the black head with red letters and I run it very rich and it is still very fast. I am not good at driving at all but the motor helps some, pepole say that it's to much motor for a bigginer but iTHink it helps for jumpes and you can gain speed on the straight way if your car is setup correctly for your track.