A new timing belt can be purchased from the club here on the website. The Cosworth Vega shop manual which can aldo be found on this site provides instructions for changing the timing belt. the only gasket you might need for a belt replacement would be a water pump gasket. They are also available from the CVOA store. The water pump tensioner tool is a bit harder to find. E bay has them for sale occasionally. The club does not offer them for rent or sale,many members have one. Suggest you join the CVOA Facebook page. Lots of involved members who can offer suggestions as you start down the road. Welcome to the club.