I have never been to any other places besides Toysgarage in Fairfield (my brother inlaw's place) so I dont know much out there but you can basically go to any good machanics and get it done, I would personally go to a machanic that are knowlegable about performance vehicles, rather then a general mechanics ones. beside changing the engine's oil, oil and air filters, spark plugs, they should also inspect your engine bay areas, all the joints, bearings under the car for wear and tear. alternatively you can DIY just do a basic service, go to a spare parts retail and tell them your car make, year model etc... and ask them for oil/air filters, set of spark plugs and dont forget a quality bottel of oil.
hope that help!