/6 rebuild advice

i agree with giving it another go thru before deciding that it's rebuild time. sitting dries up and shrinks gaskets, allowing fluids to get where they're not supposed to be. get it all up and running again and sometimes those intermingled need time to burn off, gaskets swell back up (or blow out completely).

the milkshake in the radiator is indicative of water in the oil. which could be any host of things from simply condensation from sitting for years to a seal/gasket failure to a compromised (cracked) engine component. but it's entirely dependent on how much milkshake you have going on, and then how far you want to chase a repair.

with the price of parts and machine work costs these days, there's no real savings between rebuilding a /6 or a standard production V8. however, the real expense in upgrading to a V8 is all the peripheral things and stuffs: bigger radiator, transmission, swap/conversion motor mounts, exhaust, and a whole laundry list of ticky-tacky items like belts & hoses, ground cables, trans cooler lines, fittings, fuel line, minor electrical, etx.

anyway, i'm over the hill from you the other way in the SFV. give a shout if you need anything, i'm happy to help with whatever from parts to dropping in a V8.