Most of these transmissions fit Buick, Olds, Pontiac V8 engines but will bolt to Chevy with adapter plate.
Some Chevy case transmissions(call to check)
TH400 short or long tail
TH350 short tail
300 - 2 speed
TH375 long tail
200R4 fit all $850. or $475. for core, when available.
TH350 lock up (fit all) short tail
Muncie 3 speed manual
Some are good running condition , some need rebuilt.