performance mods 101 , induction Throttle Body or Carburetor, different aluminum performance intake & ported cylinder heads with a multi angle performance type valve job, with all the appropriate spring retainers locks & seal {probably the single best improvement}, carb spacer or TB swirl spacer, some longer ratio rocker arms {will effectively act like a bigger camshaft}, different camshaft with higher gross valve lift & more duration, free flowing air cleaner like a K&N X-Treem if it's carbureted, or an air box & K&N Gauze filter & intake tube if it's TB/EFI, also a set of truck shorty headers, a Cat-back larger free flowing exhaust system, computer chip or flash programmer... The engine is just a big air pump what goes in must come out... Hotter ignition, hotter coil, ultra low ohm resistance spark plug wires, better fuel pump, better oil pump, better cooling, cool dense air into the carb/TB {keep the under-hood heat out of the intake charge & keep the fuel cool}... any combination of these will help a ton.... contact Mancini Racing