[Christ]

I'm going to start with telling you disassemble your old CRX axle and the Insight axle, and see if the Insight inboard CV joint will fit on the CRX's drive shaft splines.

If that doesn't work, I'd tell you to measure and press out the hub on the Insight knuckle, and do the same w/ the CRX knuckle. Worst case scenario, if the Insight's hub is bigger, you'll just have to take it to a machine shop and get it milled down to the same size as the CRX hub.

Else you could always see about just using the whole undercarriage from the Insight, as a bolt-in kinda thing... although it would still require modification, obviously.