i got a package of 8 "u groove header plugs" by accel... then read that they foul like crazy, so i'll be returning them tomorrow. you cant get them locally as individual plugs, just in the 30$ 8 pack. im not about to throw away money like that!
im currently running r43ts plugs.
the only issue is header clearance. im gonna swap over to an accel high temp wire set but not this week.
running these plugs, the plug boot is basically touching the header.