The Hedmans made for FGFs (4-tube) are a fantastic addition to my car. Added a great deal of power, sound and torque. I'm not saying it was fun installing them, and it took a while for them to seal and settle, but now the only maintenance is verifying bolt torque every month or two. Takes 5-10 minutes.
I don't jump curbs and am careful about entrance ramps to stores and such, so no clearance issues to speak of.

Lots of folks here don't like headers, and to each his own. I am glad I did this and consider it a no-brainer upgrade for my car.