the leakdown test is no good, some valves are bent...

i did some cross reference between TUB44 and B46, it seems a few parts are the same... so, maybe, instead of considering downgrading, i just get a used TUB44 engine for donor parts?... I have couple pieces of engine walls busted broken in small chunks of metal...
i still will need fresh gaskets and maybe a few 4.6 specific parts...

stilll looking into it...