i know this is titan talk. but lately with gas prices and how far i live from work, ive been wanting to downsize to maybe the frontier. i saw on performancelifts.com that cst has a 4" spindle to the new frontiers. i was wondering if greg has any or has had experience with them yet. and what type of combo's and tire sizes you could do. would they work with the frontier 2" leveling kit? what size block will level with the front. and what size tires will work with the spindle.