Hi,I just acquired my first boat and I've always wanted a retro/nostalgia drag boat. Since I'm a muscle car freak and have ended up with a collection of Mopar cars & parts I thought something Mopar powered would be appropriate.I'm interested in any info on the Mantra hull (history) and of course making more speed with my 383/BerkeleyJG. The engine appears to be a fresh rebuild (.060 over) and has a aggressive hydr. cam (533 lift),single plane,Predator carb,dual elec.pumps. The first time out it ran well but didn't pull to the rev limit (6K). Is this due to drag on the hull or limited HP? I haven't got a tach wired in yet but I know 6K rpm in my 69 Roadrunner (383).Also interest to hear from any other Mopar powered Jetboat owners. Thanks