Anyone have ideas on how much HP you'd lose with those VS. a TTI or Doug's header?
'74 Duster, factory weight
Stroker
Iron heads
Under 10.5 compression
Under .550 cam
Dual plane
Stick
4.10
More street than strip
Thanks for your help!
When I filled out the 'make sure this fits your vehicle', it said that the D453's wouldn't fit my '74 Duster. In fact, they had no Doug's headers that would fit.