hi i have a merlin 572 in my twin cab c30 1977 pickup i use this on street and strip its running 13.008 @103mph quarter mile and still all steel problem i have is now and again dipstick blows out but compression tested and all seems good and cant feel any pressure by putting finger over end any suggestions most welcome merlinman 572 from the uk pics can be seen on youtube under merlinman572 cheers
