Header advice needed!

Exjouster said

Hey all! Looking to get some oomph out of my 1967 273 in my dart GT vert. Planning on hopefully having it rebuilt to the 1966 275 hp specs or better. (In a perfect world I would love to get 300 hp, but prolly not likely out of my old 273)
Looking to replace the stock exhaust manifolds with headers, and considering these. Any thoughts on these, or what are my other best options?

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Option #2, cam accordingly, the closest cam to the HP 273 would be the MP284/.484, call it a day until you rebuild the 273.

J par says he never had his headers scrape the ground. It must be because his front end ride height is adjusted high &/or taller tires. That will work fine. Not correct if such is the case, but it’ll work. And sometimes, it is what ever works.

Shorty headers are NOT the answer.