she says she THINKS it 3.8. and she just kinda gave me a rundown of what's wrong. i think there's a seal that's bad vs. mechanical problems. she said they've tried to replace the seal but it didn't help so maybe the metal is just so corroded that it seeps through. at any rate she just wants something that will work, but appear OEM. this thing is cherry so she needs appearing OEM is important but genuine Jag is not so important.