There is no oil seal "kit" unless old stock from ebay , Dave Silver makes up a kit from individual seals.
Gasket kit NP if you can get one , i have heard Athens are ok but whichever it may not have the circular rubber seals betweencam cover and head, Nurse Julie if they dont. Also you will need thicker O rings inbetween head and barrells as todays gaskets are thicker than the old asbestos inclusive ones.
PM me your address as i have the thicker O rings here