i have a full race 59s that was built in 1948. 4" merc crank, .125 over bore, hug intake valves, port and polish, weber cam, etc.... i dismantled it to take it to the shop and get cleaned for an overhaul. And as usual, they found a few cracks. there is a crack from the stud to the water hole.. no biggy.. there is also a crack across the valve seat, and then 2 cylinder walls have cracks. i really do not want to start with a new block. this is a rare old engine and i want to keep it how it was. Fixing the cracks for the studs and the valve seat is no big deal. my concern is the cylinder walls. Can i bore it large enough to get sleeves in it? will i be able to keep the .125 bore? the block is also relieved, so can i transfer that to the side of the sleeve after its in? where can i get sleeves? i have a great engine guy thats willing to do the work. i dont care that it may be more cost effective to start with a new engine. i want to keep this engine original. Its not going to see the hard life it saw before. ideas?