if you have a good running engine i would just buy the eddies and be done with it. newer engines wear the bores less because there is less fuel washdown of the cylinders. you'll be hard pressed to find a taper to the bore of a newer engine even at 150,000 miles. buy the engine, get the eddies and get a cam. that engine will last you another 50,000 miles easy. if and when you blow that up or get so much blow by you'll have saved enough money to redo the lower end, at that point in time the eddies may need a tune up too.