i had a 68 dart w/ a 340 and some coated cheap headers and they sucked.hit the ground,even locked the steering up under full throttle,nice. oil filter hassles ect ect ect. went w/ tti steps and its possible! someone made a quality header for a a body wow. they fit perfect,no hassles,no stupid 90 deg adapter ect.best money i ever spent,period on headers.