Headers and spark plugs

Welcome to the board.

I have Hookers. Near exact as yours. I have had Headmans as well.

Remove the valve cover to gain greater clearance. Use the reuseable Mopar rubber covered steel gaskets for the valve covers.

Theres also a trick to put the spark plug socket on and use a wrench to install/remove the plugs.

As far as wires go, 90-* boot end with a heat sleave will keep it cooler and safe from burning. Though you should still make sure the wires do not touch the headers at all.

You can route the wires under the tube or stuff them cross ways next to each other. Then up, straight up that is over the valve cover.