if your tractor needs the flip hood bumpers replaced:
I have a 1957 TO-35 Ferguson and the center hood flip up door was vibrating. I replaced the two rubber stops/bumpers that were hard and worn down, appears to work much better.
I got the rubber bumpers at NAPA:
part # 665-2260
there were 8 rubber bumpers in the package for $5.xx
other places I found them with shipping, the cost was much more.
just a tip, if your old tractor needs the rubber bumpers replaced