Doesn't the T-ReX hold the E.T record though for a cam only car? Last time I checked (which was a little over a year ago) it held the record for fastest cam only + bolt-ons F-body at something like, 10.7x. Either way, both are huge cams (mine was 242/248 .612/.615 109LSA). Though I have heard that the X3 looooooves the spray, so that was probably a good choice.
Are you planning on running an aftermarket exhaust or keeping the stock Ti? You also need to post a vid of that thing running and doing some fly-bys. Those kinds of vids never get old.
/rambling