I have too many blocks at this time. I have about 8 or so of them. All blocks are standard bores, the blocks have been cleaned in a parts washer. They all look like the the one in the link below. Item must be bought and paid for on Friday, no exceptions so don't ask. Don't ask for part numbers because i don't have time, do your home work and you will know just by looking at it if it's a Teksid block or not. 1998 Cobra Teksid Block 4V Block to Fit Any 4V Motor from 1993 2004 Mustangs | eBay