1977 35 Johnson Gear Case Interchange

[Speedy4]

Hi,

I have 1977 35 h.p. gear case that is cracked. 35EL77C Does anyone know what years and H.P.'s will interchange?

This is an extra long shaft, does this matter with the housing, or just switch out the drive shafts?

Also, any places where I can find one. Just the case or complete.

Thanks in Advance,
John