I finally picked up a 1983 XS400 Seca. Most everything so far looks really good and it started right up however it does not have the air filter box tube/boots. Im having trouble finding some except for a set for $225 on ebay!! Are they that difficult to come by or do the xs400 sohc air filter intake boot work on the Seca dohc? Any help pointing me in the right direction would be super helpful. Pic of the bike is below. Kind regards