Looking at which suppliers are recommended and best price for gaskets, rubber gromets & bolt's etc? lot's of small bits to replace & probably an engine gasket set, if that works out cheaper?
Or even if you go somewhere else you can use the site to look up all the part numbers and you can also see what parts are available
Various places at various prices. There are some good retailers here in Australia but in Europe check out Stein Dinse or Corsa SBK. Reputable eBay sellers are also a great option