turbo/nos/supercharger will requre 93+ octane.
anything less - I/H/E - will be just fine at 87.

detergent levels are universal for 87/89/93... it's a federal law that only a certain % of gasoline can be cleaning agents, to regulate prices and quality. One of my best friends was a gas station manager in Charleston, SC... he wondered the same thing with his '95 Eclipse GS-T, and looked it up. So don't worry about that much...

But brancato1 is absolutely right about quality of the station being important... watered down gas can really mess up an engine. As a rule, generally avoid the independant "C&C's Gas and Go" type places. They buy the gas from the bigger guys, but have much more freedom to mess with the quality after it arrives than the big companies - who have stockholders, the feds, etc. to answer to. Thus, Amoco and Exxon have lots to lose, and Tucker's All-Nite Gas Depot doesn't.