70 Fury stub interchange

I was told my 70 would be torsion quiet, I climbed under it and its solid mounted like the 69's I've had apart, it's definitely a short stub not like the 71-73's, so could I use a 69 stub?

In reality I guess I need two stubs as the Sport Fury has about 12" missing from the drivers frame rail behind the control arm.

I just want to make sure I'm searching for something that is actually going to fit my turds.