what do I have

[Shaggy]

Rev go to tool club on harwin they have them there cheap.

Well you probaly have figured out by now you a a 64 block by the numbers. Now as far as production numbers go it is more then likely a 260 but that is a guess based on production numbers not actually looking at it. I have some possibly really bad news for you though that motor will not bolt up to your 68 tranny. They changed bellhousing from a 5 bolt to a 6 bolt in 65 and the old 5 bolt parts get a little harder to find everyyear not to mention i know of no one who makes any really strong auto transmissions or an SFI bellhousing if you wanted to go with a standard for the 5 bolt blocks.