I'm guessing the I is a 1 on the cowl and if you look a little harder there should be a letter in front of the six numbers that will indicate the assembly plant. You should find the same numbers on the core support. The other numbers don't really mean anything to us. It's a very early built car judging by the vin sequence number and the car looks really solid. There should be a date code stamped on front of the engine crossmember, it'll be small and stamped by hand, dead center facing the front of the car and be 4 digits. Is there a rear sway bar? What does it have for a rear axle?
Thanks for the info. The car doesn't have a K member, all that's left of the front suspension is control arms. No rear sway bar present, but I'll go out and look for evidence of mounts. The rear end is not original, it's a spicer type with a removable rear cover. It has a 5 X 5 1/2 bolt pattern, like and old 1/2 ton Ford. Two Challenger drums are there, with one stamped "Fomoco". The guy who looked it over for me told me the rear end was complete, both quarters were nice, so I said ok. When I got there the rear end was wrong, one axle was gone, along with the rear cover being in the trunk, and the gears long gone, with just the carrier there.
The right quarter will need a skin, and it will need floor or floor panels for the rear footwells, along with the trunk floor.
The only fender on it has the outline of an emblem, looks like it may have been "V8" ?
I think you're right on the numbers, I'll attach a photo. The only question left is what it's worth? I had thought about putting it on this site, or maybe ebay.