AC Delco ignition parts will work well, forget about increasing power with the ignition system on a stock engine.
I have the Accel 8 mm wires, for cosmetic sexiness purposes only.
They're good quality in my opinion, but if you do a search many people regard them as crap, so take my opinion with a grain of salt.
I will say you need the proper crimping tool to do a good job.
I like these because they're yellow! Also, with cut-to-length wires, you can get a nice and organized wire layout. I wasn't able to do this with stock AC Delco wires.
