Question about shocks for '89 200t

[Rahul Singh <rst@icsl.ucla.edu>]

I have just signed onto the list and I was hoping some of ya'll could help me 
out a little.  I have an 1989 200t and I was thinking about upgrading the front 
shocks to perfomance ones.  I was thinking of using the Konis.  I was wondering 
about how long does it take and how difficult is it to change them?  Also, 
should I think about changing the springs too, or will be ok to use the stock 
springs?

Thanks in advance for the help.

Rahul