I'm not an expert, but the Centerforce is a very grabby clutch and broke a ton of stuff in my Charger because I didn't know how to drive it easily. A lot of it was due to severe axle wrap, if I ever have another I would go the caltrac route for that reason alone. I don't know how well the caltracs would work with your new XHD springs though.

I've definitely heard from multiple sources, and experienced with my car, that stick cars do not like drag radials. You can get them to work, but they're very finicky, and with the rest of your setup (huge front T-bars, assuming stiff shocks, etc) I would go with conventional bias ply ET Streets for the track.