Shop recommendation (east Bay, CA)

Getting ready to pull the trigger on the exhaust for the Dart. Looking for either 2.25 or 2.5 dual pipe for the stock manifiold 318. Been quoted locally here in the East SF Bay around $600 for H Pipe & about $750 w/ X-Pipe. The shop comes well recommended. Anyone local to my area able to provide a few local names in which they trust to see if the pricing is consistant? Thx.

~Sae