Your putting 2 lbs of sh.. in a 1lb bag for sure, but we have done it a few times. Project EmptyNest also runs 345s and rides really low. Emptynest drives, autocrosses and drag races at that ride height and does rub a bit on the inner wheel wells in extreme situations, but not enough to scrub speed or hurt anything.
Check it and Todds car out in the project section of our site
http://www.prodigycustoms.com/projects/