Superior Equipment Repair, Inc. at 9900 Hillview Road, Newcastle, California.

Be aware that Superior Equipment Repair is not licensed by the California Bureau of Automotive, so there is little you can do to protect yourself form their bad business practices. If they give you an estimate, and they charge you more there is no place short of going to court to resolve a complaint.
I took my Monaco diesel pusher in to Superior Equipment Repair to have some minor work done. When I dropped the coach off the individual that took the keys did not even write up a work order. I was just told I would get a call. THEY DIDN'T EVEN WRITE DOWN MY PHONE NUMBER. When I called to check on the status and cost estimate I was told that the work was complete and there was another problem. I was told that another customer had hit my coach and ripped off a $1000 drivers side mirror. THEY NEVER GAVE ME AN ESTIMATE OF MY INITIAL REPAIRS BEFORE PERFORMING THE WORK. They did replace the mirror however there were also 2 large scratches on my coach they did nothing about.
When I went in to pick up my coach I was told that my bill was over $1100. They charged me more than about 8 hours for work I later had estimated at 2 other shops for 3 hours or less.
When I asked them about the overcharge they just shrugged their shoulders. When I told them I obviously wouldn't be back they said "OH WELL".
Shops that are licensed by the California Bureau of automotive Repair are required to give you a written estimate before doing the work and cannot change that estimate without phoned verification. Superior Equipment Repair is not bound by these same rules.
I do not recommend them to anyone. GO TO SOMEONE THAT IS LICENSED AND YOU HAVE RECOURSE WITH IF THEY GOUGE YOU.