I just purchased a pillar mount w/speaker hole from glowshift gauges & just like you I was not impressed with the fit. My instructions state that the guage pillar can be mounted over the old "A" pillar or in place of the old one, after putting the guage pillar in both ways (over the old one & by itself) & getting 3 other opinions, I found it to look best over the old. On mine I trimmed about 1/3 of the top off to match it to the old & it looks OEM. You might want to try fitting it that way.
Good Luck, hope this helped.