I was curious about anyone running high horsepower Nitrous systems on the 351C and 400. If the block has 4 bolt mains, main cap girdle, hard block added, and really good machining and ARP studs, what's the limit on boost? Say if you c.r. is around 10.00 to 12.5 to one. Mine has all of that plus customs pistons and old but never used Aluminum Superods.