I’m wondering if I can convert the whole suspension and breaking system to the same year impala but new suspension steering and brake application can it be done..

 

Um ... what kind of car do you have? The one in the picture?

 

1966 delta88 coupe

 

Okay, I'm gonna go ahead and say no, but hopefully Joe P. will drop into the thread and explain why.

 

NOTHING in the frame, suspension, or brakes interchanges between the Olds full size cars and any other GM division's full size in the 1965-70 series. Each division used a unique frame, suspension, steering linkage, and brakes.

 

I understand that part I’m trying to change it to something that’s readily available

 

Just go out and switch to a Chevy and put the Olds emblems on it, your bound to get a lot of attention

 

One more time. NOTHING is "readily available". There isn't enough of a market for aftermarket suspension for these cars. No manufacturer can justify the investment in development and inventory. The rear control arms are the same as Cutlass. That's about the only thing that interchanges. Heck, even some stock replacement parts are difficult to find.

Now, if you want to build a custom frame or use one of the aftermarket pro touring frames, knock yourself out. Be prepared to spend several tens of thousands of dollars and have to custom fabricate the floor.