I need to know if the front drive axles, cv joints and all that kind of stuff can interchange between 2wd and 4wd.  I have an 81 s/r 4wd DL wagon and I need cv's and other misc. parts.  Will cv's (specifically) interchange?  I'm considering buying a similar vintage (probably83 or 84) wagon parts car to pull stuff from. 
  
I need to know...my right front joint is making losts of noise. 
Thanks, 
Jason