[ozstang65]

Sourcing the parts doesn't seem to be the problem and i have an engineering shop that says that boring the existing sleeves to 0.5 over isn't a problem either. The big issue is the reassembly method and the possibility for warping the rather light aluminium block if it isn't done properly. I can only assume that in the factory all of the main bearings are torqued together and to exactly the same value.