To go to that much trouble and NOT just tear the whole engine down is a huge waste of time, in my opinion. 110,000 could be near the end of life for this engine if it was abused. It would be wise to at least tear it down and clean everything and replace all the gaskets, the piston rings, the timing chain tensioner, the main bearings, the rod bearings, the valve guides, and whatever else I cannot remember. Oh yeah, hone the cylinders once it is apart. Clean everything in soap and hot water and then wipe off with rubber gloves and acetone. This is a very large job unless you take it all to a shop for cleaning (which makes identifying the parts harder if they are all in one big group--especially all the bolts.) A common source of wear on the 3800 is the camshaft. If you find pitting or abnormal wear on any lobe, replace the whole thing ($150-$200.)
If you do this right, you'll have it last many, many years.