Not sure about tinting, but I've had my exhaust work done at Mighty Muffler. They're cheap and pretty quick. Not the best quality, but as long as it doesn't leak... it's cheap. They also welded on my subframe connectors and rear strut tower brace.
For quality (read: expensive), you could go to Arizona Dyno Chip. The welder there (forgot his name) is very anal and does some beautiful welds.