Just an idea before someone replies who knows an answer this.... I'd go on eBay see what those items have sold for in the past or are selling at now, add it all together then if ur nice knock a bit off :-)
It's all about workin out the ET mate It's not an easy thing to do without havin adapters to test fit etc If u can't do the above then buy bigger than u think u need n get them machined down to what u want
suspension geometry is a fine art and never quite as simple as "as low as possible" So in effect I'm right.... As low as possible without causing averse effects lol