what is the differance between a sidekick vers a sidekick sport.i know they have a bigger motor and this inside has some extra's.but what i'm asking is putting a sas in the sport any harder then sas a sidekick

If you're doing the Fab work yourself, probably not - if you're buying a kit from someone, then you're probably going to be doing some fab work of your own - the Sport has a wider chassis and running gear.