Two thoughts for future builders: first, not many U.S-cast 351-C blocks will survive an 0.040" overbore. Back in the day, Ford recommended only 0.003" oversize and yes- that decimal is correct. A few that have tried big bores found the remaining cylinder walls were so thin, piston rings would not seat due to wall flexing, so such engines were forever oil burners. Thoroughly sonic-test any candidate blocks or use a siamese wall Aussie, racing or Tim Meyer's block! Note- not all 'Aussie' blocks are thick-wall, either. The ones that are, weigh about 50 lbs more (200+ lbs) than OEM.
Second- sleeving more than one (1.0) cylinder on each bank of OEM 351-C blocks can and has caused block cracking at the intersection of the lower end of the sleeves and the center main bearing supports, due to the amount of supporting cast iron that must be cut away. A multi-sleeve block may be OK for a while around town, but I would not go for high power with it! The only reason early drag racers got away with this is because they furnace-brazed big sleeves in place! And that forced remachining of every surface in the block including head surfaces, cam & main bearings and lifter bores, due to heat distortion!