Midas on 236 in Annandale. Kenny is the manager. Good guy. But buy the part online. A-1 Performance Exhaust.
703-354-7000.
It cost me 75.06 to have my old muffler/resonator cut out of a custom SS system and have my dynomax bullet welded in place.
They charged my $170 to mount my custom CTA Motorsports exhaust. Which included fitting and welding all joints, welding hangers in place and gaskets & gunk for the three flanges. (2 exhaust manifold, 1 cat to cat back).
SP Motorsports is way too far, and way too expensive for this type of thing. $77+ and hour for a 2 hour round trip.
Let me know if you have more questions.
Ed