Matt, check the various rally forums like Special Stage, Rally Anarchy etc. You may be able to,find a deal on something like DMS gravel dampers. Guys frequently start with the smaller housings and then go to the larger diameter assemblies. I'd also plan on reinforcing the tops of the strut towers on the shell. If your planning on actually driving it down any gravel roads and encounter water bars (culvert under the road) the landings have been known to punch the struts through the tops of the towers.

Dave note yes the ZX struts are shorter but the stock spring causes the 1200 to ride higher. Now that I've seen how serious Matt is going I'd not recommend going that way.

Tom