Join Date: Feb 2002
Location: N.W. Washington
my pro toplines are angle plug heads, and i'm running over the counter super comps, and they fit excellent. there also is better plug access than with my old straight plug heads and the headers that fit them. now my car is an automatic, with power steering, but i believe if you throw in a manual trans things get dificult in a hurry. i can only speak of a p/s, auto car. as for performance, my understanding is with the old "bathtub" chambers, angle plugs made a difference, but with the new "fast burn" style chambers, like the pro toplines have, it makes very little difference. i would just go with what your headers are meant to accomodate, and if your getting headers too, like i said, with mine the angle plugs have better clearance. but if you have a manual, straight plugs are probably going to be easier to get headers for.
1968 rs with an old school 354" SB2.2 pump gas motor.
Repetition does not transform a lie into a truth.
Franklin D. Roosevelt