Nivomats are not adjustable and are expensive to replace. If you
replace them with conventional shock absorbers then you need stiffer
main springs. Some of the Volvo aftermarket specialists offer kits
consisting of new springs and conventional shocks for doing this.
I don't know of any cheap solution to your problem
.
Here is a listing for the replacement springs:
http://catalog.eautopartscatalog.com/ipb/quote.jsp?header=&footer=Please C
ome%20Back%20Soon,%20We%20Appreciate%20Your%20Business!&product=1273977&part
ner=ipb&baseurl=
http://www.alleurasianautoparts.com/&clientid=alleurasianaut
oparts&cookieid=1W10L2YKD1WW0JJYUV
And for shock absorbers compatible with the conversion:
http://catalog.eautopartscatalog.com/ipb/quote.jsp?clientid=alleurasianautop
arts&cookieid=1W10L2YKD1WW0JIX6J&baseurl=
http://www.alleurasianautoparts.com
/&partner=ipb&year=1993&product=L4000-17119&application=000278209
Personally I think that the KYB shocks are a bargain.
Of course if you want more Nivomats, they are available .... at over
US$250 each:
http://catalog.eautopartscatalog.com/ipb/quote.jsp?clientid=alleurasianautop
arts&cookieid=1W10L2YKD1WW0JIX6J&baseurl=
http://www.alleurasianautoparts.com
/&partner=ipb&year=1993&product=L4000-50575&application=000279272
John