mechanics in the Orange County, CA area

[Good Times]

I'm looking for a good mechanic to check on a vehicle I'm considering purchasing.

I'd like to have it checked out this weekend (saturday) so it's gotta be open on saturday. Also the car's located in Garden Grove so anywhere in that area would be great.

I just need to do the basic inspection (engine compression etc etc) the usual stuff so it doesn't have to be a 5 star place. Just a place for me to make sure the car i'm considering is in decent running condition instead of something ugly.

Thanks!