I had a V-Spec in my buggy and ran it all year and never had any trouble and I think I had around 7-8 gallons on it and it still ran great so I don't know what people are talking about when they say that v-specs will not last but I must say that I have a buddy that I race with that has been doing this for years and used to run v-specs and he went to a STS motor and he said that he is going to stay with them he has had 2 of them and it didn't matter where he went he either won or took second and he was racing with guys that place high at the pro series races so I would go with a v-spec or a STS