The clamshell-type coil prring compressor which will work is made by ATD, and is no longer available for under $100. Cheapest price I've found so far is $118.73 at http://toolrage.com/Store/Scripts/prodView.asp?idproduct=721. There are other types available, but they are at least this expensive. The cheap type which clamp to the outside will work with great difficulty, but I will not use them anymore. The type of compressor which inserts through the middle of the spring under $100 will not work, as they are too big; there is a center mount compressor for sub-compact cars that might work for $60, located here http://www.toolsource.com/ost/product.asp?sourceid=overtureautotool&dept%5Fid=500&pf%5Fid=58512&mscssid=WQNFH4AGJHB09MRTXU1XHEARQ9JNF5MF

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