Can anyone ID this thing? I'm told it's original for a 49-5? Olds 303. I've seen them on some cars with a huge oil bath air cleaner/silencer attached. I can't find anything online about them and I don't know the model number. There is a number cast into the front of the bottom of the bowl/plenum. I'm betting it's a super rare, ultra awesome, one-of-two ever made, five pound gold mine. Probably worth around $60,000 but I'll take $59,995... HAHAHAHAHAHAHAHAaaaa...!!!...!!! Anyway...any help is mucho appreciado.