I also saw that car years ago, and thought it a neat idea. A friend had a 250GT cabrio with a cracked block. He found another 128F short block, and we did the switch. He said I could have the bad block, which it turned out also had a broken rear main cap. But stuff I could fix. I had the idea of completing the engine and putting it in a T-bucket roadster, if for no other reason than to piss-off my Ferrari friends. But the idea of having that engine, with red cam covers and six DCNFs in full view, was really enticing. Just one of those things I wish I had done, but other projects kept me from attempting.