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I've finally decided to bite the bullet and do it right. I'm getting a crank trigger and Crane HI-6 ignition box for the 390. This will allow the Holley Commander 950 to control timing.
I'd spend the extra 10 bucks myself... I've ran the LX-92 and never had a problem with it in my mud drag truck. Never ran the LX-91 so I can't compare or disparage against it.
This Hennessey Takes the Expedition Tremor's Off-Roading Capability to the Next Level
Slideshow: The VelociRaptor Expedition gains a lift, upgraded suspension, Brembo brakes, and trail-ready equipment while retaining the stock 440-horsepower EcoBoost V6.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.