If you are going to do drive autocross or anything where you might want to alter adjustments finely and quickly, then the best way is to obtain struts with 2 1/4" springs and threaded platforms.
I believe Kercher sell these, but you can make a pair of your own quite easily and much cheaper. Take a look of these done by Niko Niittymäki for his rallysprint 1302.
http://www.geocities.com/aikakultaracing/tolpat.jpg
Justin