So I cut out some of the metal baffles or whatever they are, with a dremel....but the valve covers still won't fit on with the Pro Magnums.

Is there any easy tool / trick to doing this?

 

I also used a dremel tool (with a cutoff disk).......I trimmed everything close to "even" with the top of the inside of the valve cover......then the pro-mag's cleared no problem.......it does take a little time

 

Do a search on this. There are a couple of excellent "how-to" threads with pictures. I did mine using this information for my 1.6 Pro Mags. No cutting or grinding required, just bent the interfering valve cover internal bracing and breather baffle with pliers.

Chris

 

Check this out ---http://www.hotss.com/Members/scott_vaca/pro-mag.htm