2004 RPX and 2003 GTX Turbocharged

[Okybrian]

2004 RPX and 2003 GTX
These two have not run in more than four years but are very clean, and the engine and hoses look very good. Besides changing plugs, draining and changing all the fluids and getting a new battery, what else do I need to before I crank'em up? Do I run Seafoam through them?

Any help would be greatly appreciated

Thanks in advance