318 Poly A engine in a 67 Cuda

I have seen some peoples cars that have done this swap but have not been able to talk with anyone who has personal experience in this swap. I'm looking for information on this swaps possible issues. I have measured 64 B body's and they are 1" wider inside fender to inside fender. The 64 B body has about 7/8" between the exhaust manifold and the power steering sector. I have not seen any other issues but would love to hear from someone who's done this or has information about this swaps issues to be worked through. Pic was found on this site and is just for attention. ;)

Thanks.