Can I put a 96 5.2 block in my 68 Fish?

Hey guys, Sorry for the repost to start with. (I can't be the only one) I came on here to see if any one can direct me. I have only the time to post this and get back to work. I have my hook into a 96 5.2 from a guy that says it will fit into my 68 Formula S. Without getting into more details right now I have everything ready to go on my Cuda but I am running out of time. I need a running engine by first snow fall here in Fort Collins Co.
The Engine is guaranteed to run. Problem is I will have a weekend to get it in/fix any fit problems and can't afford to make a Rooky mistake > Measure twice and cut once < I measured the motor mounts and they are close enough to want to get a better/another opinion. If some one could tell me if the block will fit.. into a 68 barracuda with stock Kmember and as a bonus.. if my TTIs will fit ok Once I grind down the Nubby on the driver's side. I will look again tomorrow when I get time and search, if no one can inform but.. It might be sold by then. It is a good deal. Thanks in advance.