Can you make hedman headers fit in an a body with an RB?

Go to big block dart .com and look at there tech section for the very instructions you need.

all they say for the hedmans is that they will fit well in a low deck with just a small dings nothing about raised deck... i tried to make them fit when i was mocking up my 440 so i assume they would need cut up but mopar muscle makes it appear as though they just fit. i know chances are slim for that though lol