Do I need new gaskets or hardware to connect this to my factory midpipe?

Mounting points are factory flanges, but gaskets and bolts aren't confirmed in the assembly. Order gasket material and stainless fasteners rated for exhaust temps as a precaution — standard hardware may not survive heat cycling.

Will this fit if I still have the stock resonator and catalytic converter?

Yes. This is an axleback system, meaning it starts at your midpipe and replaces everything behind it. Your factory cat and resonator stay in place.

Can I install this myself with basic tools?

Axlback systems bolt on at existing flanges — no welding needed. You'll need jack stands, a socket set, and patience to work under the rear. If you've done exhaust work before, plan 1-2 hours. If not, a shop can knock it out quickly.