It WILL be less expensive in the long run to simply buy another set of gaskets.
Some people use the end gaskets and some people use RTV or other sealer
Make certain you have removed the pins across the front and back if present, and if the intake has no recess holes to accept them
I dislike metal gaskets. If you use them at least use sealer on the front and back holes which are the water ports
If you don't use the cork end gaskets, lay a nice bead front/ rear, sit the intake down carefully, and snug it down, then "finger' a smooth bead along the block/ intake and check carefully there are no gaps. Do NOT be tempted to run the engine until you allow enough time for that to cure
