You're confusing aftermarket with OEM, as the stock V6 and 318 were definitely smaller than 670. Now if you have an aftermarket tbi, it may indeed be a 670, but it wouldn't fit without some sort of adapter. If you have an aftermarket 670 tbi with a Mopar-specific offset bolt pattern for use on a stock manifold, well that would be a rare bird. Interested to see what you find. Mopar offered the 360 tbi as part of a performance upgrade for the 318 back then. It included a template for opening the intake to clear the larger throttle blades. Kit included 360 computer and a Flowmaster muffler. Wonder if that's what you have?
Last edited by Gen1dak; 10-13-2011 at 02:56 AM.