Originally Posted by wayne_curr (Post 584602)

I really think you should go with a bottom mount setup. You're still going to have a hard time getting a 3" downpipe in there with that removed.

I can seam weld it if you need me to. I could probably tote my welder up there without too much issue except I dont know how they feel about bringing pressurized gasses across the border.

Originally Posted by rugger (Post 584424)

Don't cut into it anymore than you have. There is structure behind there, and you don't want to mess with it. However, the "ears" against the firewall can be cut out entirely. Every v8 miata has them cut out. Picture of mine before paint:
http://www.pirate4x4.com/forum/attac...1&d=1193015133

edit: There are some subframe mods that can be done as well that will give you crazy room. Let me know if you want to consider that.

Originally Posted by falcon (Post 584621)

I'm cutting my bumper, and want to get rid of as much weight as possible. And the exhaust I have droops too low and always scrapes (and I'm not even that low!). There is ample room to re-do the exhaust a good 2-3 inches higher. And it will involve very few bends = more flow.

Originally Posted by chpmnsws6 (Post 584639)

You left a lot of meat on that! Mine is cut flush with the "frame rail" on both sides. We added in 1/8th inch steel plates to both sides for some added bracing, and was going to triangulate the corners some, but ended up getting lazy

Originally Posted by Sokool (Post 584937)

I got 3" to fit just fine with out cutting the shelf.... Who needs mandrel bends? Pie cuts FTW!

http://i206.photobucket.com/albums/b...a/exhaust2.jpg

http://i206.photobucket.com/albums/b...a/exhaust5.jpg