Ever since Mopar released its Hellcat V-8 as a crate engine last year, Ram enthusiasts have considered the possibility of another supertruck that could revive the performance passions the iconic SRT-10 models produced from 2004 to 2006. If you remember, those regular-cab models came with a 500hp, 8.3L, all-aluminum Viper V-10 engine and six-speed manual transmission.