I appreciate the help I've recieved on my 347 build but now I have to scrap that and I'm pretty mad. The 302 at 196,000+ miles had catastrophic failure and I'm just going to start fresh with a 351 as that was my next build plan anyway. So I don't wanna assume I have to learn all over again what parts will work with the 351 as far as I understand, most parts are interchangeable minus a few such as accessory brackets and oil pump shaft, etc etc.
So I'm on a quest to look for a 351 block. The goal is a carb'd application, 408 stroke all motor. But the foundation is the most important part. So, I'd really appreciate if you guys could let me in on what 351 block is the best to find, what to look out for, pros, cons of the block you offer and so forth.
I understand that there is a 351m block out of trucks that is undesirable (at least from what I've heard) and I just plain need help. Thanks in advance.

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1988 Mustang GT 5.0
BBK 1 5/8th Ceramic Shorties, BBK O/R X Pipe, SLP LM1 Catback, K&N Panel Filter, MSD Blaster Coil, MSD Pro Billet Distributor, MSD Super Conductors, March Underdrive Pulleys, Weight Reduction, MT ET Streets, Electric Fan, Steeda Tri-Ax