I am working on making up some instructions with detailed pics...should be availble in a few days.
The torsion bars are splined on the ends, so yes they do slide into the big holes, unless someone has changed the keys to non-OEM size, the kit will fit.
NO DRILLING REQUIRED!!!!
Does not affect ground clearance, as all the parts in the kit are positioned ABOVE the crossmember.
Thanks for being patient, this has been quite a project!