The 2006-2007 models had no big end problems, so you are safe.
The other gremlin on the older LC4 motors are the rocker arm bearings(exhaust and inlet side)
Simple, take the bike for a valve clearance inspection and have them check for play and wear on the rocker arm roller bearings. If there is no wear and the valve clearance are in spec, dont go any further, get on and ride it like you stole it. Just change oil often.