So its safe to say that the IM gasket is garenteed power where as a the other spacer will just give you a better air to fuel ratio.... wheres to best place to spray (N O S) by the throttlebody body useing a spacer or in teh intake itself.... Sorry don't mean to be ignorent to the spill but you kn ow how everyone needs to ride the short bus... (it seems I'm on it more often than not)