proportioning valve swap?

I was wondering if you can swap prop valves without having to buy a new one. My LX is 100% on the front brakes and my hatch recently died, so I was thinking of swapping out the valve from my hatch into my LX. I replaced the cylinders on both my drums and its still chewing up my discs. If I can, is there anything I should know about the process? I know very little about prop valves and I didn't see anything using the search. Any help would be dope.

Should be an easy swap, as long as both valves are from cars with rear drums. It is pretty straitforeward, out with the old and in with the new. Be sure to bleed all the lines as well.

Yeah, they're both drums. Is there any pics anywhere of the valve? My friend has me second guessing where it is located.

It's on the passenger side fender in the engine compartment. I think there are two lines going in and four lines coming out.