me(only 17 years old) and my father(45 old fart) are always fighting because i want to get 1 3/4 longtube headers and 3" x pipe with 3" inch catback with super 44 flowmasters mufflers.......


my dad said to buy 1 5/8 longtube headers and 2.5" x pipe with 2.5" inch catback with 40 series flowmasters........


what brand of headers should i get???
who is right me or my dad?

my motor is a stock block 302 with built (stock) heads, f303 cam, rpm air- gap manifold and 650 carb ........