might manage to find even more horsepower than he’d had from those twin turbos because performance was improving as the 1990s advanced.
     To get the ball rolling, McKeon gave Corvette Mike a return call. Vietro, in 1993, was the West Coast franchise for Callaway’s Aero kits, so Mike would sell and install an Aero body. Tim also added a set of ZR1 wheels, perhaps in tribute to the ZR1 he’d owned prior to the ‘91 Callaway.
     Thus assured, McKeon looked into an engine upgrade and found a likely candidate from Lingenfelter Performance Engineering in Indiana. Tim liked their 383 stroker engine, which perhaps not so oddly was the same cubic-inch size used by the new Supernatural Callaway.
     With the previous generation small-block, the twin turbo Callaway delivered 403 horsepower at 4,500 rpm. With the 383 Lingenfelter engine, which included internal engine mods and not just top end components, Tim would have 440 horses.