To use eccentric bushings go to www.specprod.com. Specialty Products has them for 88-91 CRX upper control arms. Really a simple update to do if you know the range of adjustment you need. You will want to get their adjusting tool too. I have had very good service from Ultra Performance in Tucson, AZ for most of my suspension parts.
Happy holidays
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'89 CRX Si-SCCA ITA
'96 Civic HB Just cruising daily
'99 Prelude=a sweet song in motion