Corvette spacing will save you some extra room between the radiator/fans and the engine but you have to place the accessories on the outside of the engine. If your engine bay is too narrow to push the accessories to the outside then you should look at moving the engine more to the rear, relocating the radiator further into the core support, or relocating the radiator entirely and using an electric water pump.
DD-LS1-ALT-PS-CV
If you go with an electric water pump without an idler and you need proper belt tension on an alternator only setup.
If you are only running a mechanical water pump and tensioner
