My MR2's stock muffler is strictly a bolt-on part, and I’d like to replace it with something lighter for autocross. Stock one weighs 35-75 lbs, depending on which 2003 Toyota forum post you read.

This MagnaFlow universal muffler seems like a good fit, but I’m not sure what kind of parts I’d need to fit it on the car securely and without leaks.

Anyone here have experience with exhaust work? Is this DIY-able or should I find a shop to figure out a good setup?