[Oldnissanguy]

I'm not sure what a compression rod is, but if you're talking about the torsion bar, they can be adjusted or re-indexed. Do a search. If they're broken, sorry!

 

[Oldnissanguy]

Okay, then probably your only cheap source it to try to find them at a junk yard somewhere. Try car-part.com. Have you checked any of the online Nissan dealers like Pinnicle?