Originally Posted by moparx
as i am aware, most if not all, 4 pin boxes will work.
but as has been mentioned, check your timing, as some boxes can retard timing more than you think.
i don't remember any box that advanced timing, although it may be possible ? shruggy
beer

If you replcaced a box that retarded a lot with one that retarded less the end result would be advanced timing

In theory, there is no difference between theory and practice. In practice, there is.