Hedman Hedders Exhaust Equalizer Kit completely eliminates firing order pressure differences between the right and left banks of the exhaust manifolds, or hedders. The tangentially siamesed crossover junction synchronizes the exhaust pulses.
X-TREME Exhaust Equalizer Systems use a hand welded X-Junction to dramatically improve the perrformance of your Mustang. Rated one of the bet X-pipes for the money by 5.0 Mustang.