Help with 413 Build please

I was told the blocks were thick as hell. this was because they were built for use in bread trucks and such. Seems I heard the 426 wedge and 413 were the same casting. Sonic testing would tell the tale. wouldnt it be cool to have a 426 street wedge.Larry Shepard himself stated its safe to bore the62 and 63 blocks .070. Just have it sonic checked for core shift.