I'm am in progress of getting my 347 back in running condition, the motor is supposed to put out just over 500hp with a holy 174 blower. Then engine is going into a 86 F-150 4x4 that is lowered down with a C-6 trans. It currently has a set oh hooker long tube black quarter inch flange headers on it and they suck. They look like crap and I can never get them to seal off the head. I am thinking 3/8 flange and ceramic coated is the way to go, long tube because I want the extra torque and have the room. Does anyone out there know of a great brand to go with? (as long as it does not brake the bank lol