Have a really tight (150lbs + x4) 2.1 with approx 90K, always used synthetic oil, ran great pre-conversion, been out approx 6 mons, no head leaks. Before I plant it in my 84 S/R Vanagon do I do a head gasket and valve re-seat job prior to install? or take my chances? Realize no real science here, just best guess.
TIA   Bob Allen
88 Westy FS
86 Syncro Westy FS
84 S/R Vanagon, soon to have weekender, 2.1 etc (keeper)