I have an engine that has been sitting in my garage for some years, and I'm finally going to get some time to work on it and put it back together. The engine's top end is disassembled, but I did not disassemble it further. The engine, a normally aspirated 3.4 liter 6-cylinder engine from a 2000 Porsche 996, is difficult to reassemble and was running just fine when I removed it, which is why I haven't gone any further. The heads, valves and lifters are now all cleaned up and ready to reassemble, and nothing seems to be wrong with the bottom end.
Should I use assembly lube for the parts I'm reassembling and just not worry about the main bearing and other bottom end parts? Is there some other smart way to make sure that the main bearing is sufficiently lubricated for initial startup after all this time?