WINDEROSA 1969-1973 SL338 B C D YAMAHA 710029 FULL TOP END GASKET SET. The vendor part number is 710029. Read title to know what you are getting. Catalog descrition� TOP END SETS (WINDEROSA)Sets with TS prefixTS set contain High Performance head and base gaskets.All Winderosa head gaskets are computer designed and raceproven to provide reliability.