The drivers seat spring and the passenger's are, I believe, identical. The trick would be to check out the passenger side seats in a junkyard. Or you could use tennis balls or do the pool noodle trick mentioned on this Forum or find the broken parts and crimp and/or weld them back as they were before.

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Semibodacious Transmogrifications a Specialty

1990 300D 2.5 Turbo sedan 171K (Rudolf)
1985 300D Turbo TD Wagon 219K (Remuda)

"Time flies like and arrow, yet fruit flies like a banana"
---Marx (Groucho)