after ready everyone's post, it all makes sense to me. so i went out to my local autozone too look for the spacer's, both 4 hole and open. and i came across several types of both styles. grabbed em' both that fit my application and when i saw another adapter in the back of the rack that said, 1" spacer for four-hole and open manifolds, fits holley,edelbrock,AFB,carter. this thing is sweet, it has 2 adapter plates that fit inside the spacer to make it either 4 hole or open. comes complete with gaskets, bolts, and all. the plates look like their made out of phenolic plastic kinda material. what u guy's think? let me know if u need a part number? thanks for all the help so far,,, keep ya posted on the progress. thanks