...standard 4 cylinder engine ...?? And if anybody also know what engines are interchangable on a 1999 toyota tacoma, it also is a 4 cylinder 2.4 liter ... tryin to get the most horsepower without cutting the frame or body .....

most toyota engines for that model are the same, the best way to improve horse power is by after market parts like cold air intake, exhaust, timing, weight reduction, even adding a turbo

conversions are always trouble. stick with original equip, and buy what you really want the first time.