I used a dremel on parts like this too, but not to cut the pipe.

I would cut the bolts through, not off, any angle will do, then use a scredriver and hammer to split the nut or bolt depending on what you are cutting and the rest comes apart.

Just a suggestion, but this is the best solution I came up for these type of problems.

xp

__________________
1985 190E 2.3L - a constant project.