i've had this car and motor combo together for years, with stock olds manifolds.
i am having a hard time finding headers to fit. i bought 403 headers, but they hit the steering shaft. I thought about a set of block huggers from sanderson, but they go down, and will probably hit the cross member. They are kinda pricey to just try em out. snce i probably cant sell em if the dont fit. anyone know of a set that wil fit. i can't go back to manifolds.  

i think your best bet is to buy the header kit and make them your self or go to a exaust shop and have them customize you a pair or tell you what you have to do to make them fit.good luck