Hey bloke,
RX7 stub axle is different diameter and offset to CB2. I went through all this with my 626.
There is nothing "off the shelf" to suit our cars.
The quick solution is to fit the whole RX7 strut - providing you allow for adjustable strut tops
to correct the camber, can live with the front end being a good 3" lower than standard and tyres
wanting to scrape the guards!
(I have fully rebuilt S2 RX7 struts sitting at home with new rotors, bearings, pads - doing nothing
because I fitted them up,
HATED how the car looked, and took them back out!

)
The better solution is save your bux and get a custom set made to suit your car:
http://www.ausrotary.com/viewtopic.php? ... lit=plo13b