mod for header?

I am interested in getting a DC sports header for my CRX, and I thought it was a bolt on, but I just talked to a mechanic who said that something needed to be shaved down to accomodate the header. Can anyone tell me whether this is correct?

if it's listed specifically for your vehicle, it should just bolt on.
i've never heard of there being an issue, but it's always possible...

a buddy of mine has a 91 crx si and he had a DC sports header on it and he didn't have to shave anything down. that guy was probably just trying to get more money out of you.

thanks for the info...