It is very likely you don't need anything new.....just get the old parts cleaned up.
I might buy a kit like this one and use the float bowl gasket, needle and seat, TEV diaphragm, O rings and fuel screw. I would not use the jets or the slide needle as they may not be a proper size....and I would not replace the slide diaphragm unless yours is damaged.
lkAAOSwgDFj7JPb&amdata=enc%3AAQAIAAAAwHZUoXY%2FeBy0%2FYCJgeEnB2OckFSM4Y9GI57epejV0CSCac3TzL5fWRoPLVuwhwlyT8C4XdMs70hKpletDxoBvRm5aMSdRzsSDMlDHOan%2F24bQCRUX4pUIQBc0%2F86NWsgRkPaE8D2tVl4shf4qV6J3YR1NTfBA7bsZ%2B42grU1DTNE9wsrGSeOT1xoSLaTjNIW9kP3MEjdR2N7LAMdXnYF3ZT7kFKisGj%2BddsnUkk%2BHaP1sKQUlfm8VnYNsAo7TbbpoA%3D%3D%7Ctkp%3ABk9SR6jz0Yn-YQ" target="_blank">https://www.ebay.com/itm/364148148842?hash=item54c8ebca6a:g

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If you are working on the carb I would change to a #50 pilot, a #150 main and 3 machine screw washers on the slide to replace the white plastic spacer.
Be very careful if when you remove the pilot jet and fuel mixture screw - they are soft brass and the screwdriver slots are easily damaged. If you can't get either of them out....STOP and get help.