Here's the site which you probably know about for the Georgia 1/2 Mile shootouts. wannagofast.com Georgia 1/2 mile shootout fall 2012
http://www.wannagofast.com/events.php
Saw a smattering of LT5's on the video including one of Wayne Hale's two (I think his lingenfelter 415) that ran about 149mph. I think it was his resleeved one, not his twin turbo but can't remember what he told me when I talked to him about it.
Go to
www.wannagofast.com and click on results then on any of the dates, I picked Sept., and then there is a button to click on excel spread sheet of the five runs actual results. he's in there at #50 on the listing which is not by speed. His twin turbo is >700 hp and he only turns the boost up in third gear to keep the wheels from spinning off he told me. Fast.