well, he did actually said a quantity.... but, time befor at the MI's office sid had a lot of bodies there......... i could say more than 10....
i think there are much more....
I don't know how it sounds in english when marty sais how much because i saw it in german - I'm from austria - but in german it sounded like "ich weiß nicht." that means "I don't know" but, like i said, i don't know how it sounds in english.. But if it sounds Similar like "i don't know" that could be the reason why sid or hawkes, i can't remember who asked marty how much, looked So shocked when marty said whatever he said.. ;)