I found a set of four brand new carburetor intake boots with o-rings for sale for $32.95 us with free shipping at OKP.com. Unfortunately when I compared pictures of the product to an original equipment boot I have, I found the vacume nipples are at different angles and worse when looking at the inside bore of the manifolds you can see bulges and flaws that arent present in oem boots.I would be afraid I was installing restrictor plates if I were to use them.
You gets what you pay for in life.
Joe