340 manifolds outlet size?

If that's the ad, unless it was changed, it's pretty clear what was for sale.

Like bbrroowwnn says, you need the early drivers or later pass side to match them up.

$250 is a great deal for those two manifolds.

I bet he used that POS chart that another person posted in the tech section that has a bunch of wrong cast numbers for 340's. According to that list, they are matched... but, the list is WRONG!!!