I need to replace the Subframe and a Rear Control Arm on my wife's 81' 240D 123.123.

I located this whole assembly at a U-PULL-IT on a 74-75' 240D 115.117.

WOULD THESE PARTS BE COMPATIBLE with these two 240D's with differeing chassis types?

they look very similar , but I DONT KNOW!

the yard plans to crush that 115.117 in a month, and they are asking 80 bucks for the whole rear end.

another yard has a 123.123 rear end for about 150 bucks. rear end meaning subframe/control arms/rotors/differrential...

anyone?

thanks
eduardo