The car will have Pulsar Coilovers, because it has a pulsar floor pan, including front and rear suspension. The whole lot's basically been cut out and welded into my Micra. The front and rear axles are transferred over too. It will be using a manual gearbox.
You could do a SR20 conversion, although one has never really been done successfully before on a K10. I'd stay with your CG15 if I were you and just resolve your suspension issue.