HELLO LAR! THESE TWO ENGINES JUST MENTIONED LOOK LIKE SOME "KILLER" TORQUE! THE 514 SOUNDS IMMENSE! IMAGINE WHAT THAT WOULD "PULL" LIKE IN 5TH GEAR. THE P.I. 427 WOULD BE A RARE BREED AND NOSTALGIC, "FORD 427". I BELEIVE IT IS BASED ON THE 351 WINDSER. I'VE ALWAYS LIKED THE CLEVELAND (351) I WONDER IF YOU CAN GET AN ALL ALUMINUM BLOCK TO GO WITH THOSE ALUMINUM HEADS? CAN YOU IMAGINE HOW MUCH WEIGHT COULD BE "CUT" OUT OF THE REAR END? I KNOW ONE CAN OBTAIN A 302 BLOCK IN ALUMINUM ALONG WITH THE HEADS, BUT I JUST WOULD NOT LIKE TO SEE THE SMALLER SIZE IN MY ENGINE BAY. FOR MY MONEY, FOR 450 HORSEPOWER, I WOULD STROKE AND BORE OUT YOUR 351 CLEVELAND TO 427.(4 OR 2 BOLT MAINS) GO FULLY ROLLERIZED, HUGE EXHAUST, AND TOP IT WITH THE MOST EXOTIC INDUCTION I COULD FIND. EITHER FUEL INJECTION, WEBERS, OR MAYBE DUAL QUADS! ALTHOUGH NITROS WORKS VERY WELL, AND I PERSONALLY HAVE NEVER EXPERIENCED IT, THE BOTTLES ONLY LAST FOR 120 SECONDS.(10- 12 SECOND RUNS), AND THEN IT'S TIME TO GO FILL IT UP AGAIN. WE USED TO SAY "BOTTLES ARE FOR BABIES!" TURBOS ARE HEAVY, TAKE A LOT OF ROOM AND MAKE A LOT OF HEAT, AND LAG. SUPERCHARGING IS HEAVY AND THERE JUST IS'NT ROOM FOR IT WITHOUT "CUTTING". HALL HAS ONE NICELY BUILT ENGINE FOR AROUND $4000. I DON'T KNOW IF IT PUTS OUT 450 HP? SOUNDS LIKE A FUN PROJECT! I JUST RECENTLY PICKED UP A 351 CLEVELAND 4 BOLT BLOCK THAT I WILL BE PUTTING TOGETHER ONE PIECE AT A TIME. THE CRANK IS A STANDARD STROKE. I MAY OR MAY NOT GO WITH IT. ANYWAY THAT'S ALL I KNOW. GOOD-LUCK TO YOU! REGARDS, MARLIN.