Question on ZL1 ebay item 2458413244

[BBIGG BLOCK 396]

I talked to a very reputable machinist today and explained the deal to him.He say's that if the block is sleeved it would be easy to change the sleeves back to the original size.He say's all it boils down to is getting the new sleeves made ,remove the old sleeves and install the new sleeves then check each cylinder to make sure it is within tolerance.I do not know that much about aluminum Blocks but the machinist that I spoke to has been building engines for 38 years.He also builds a lot of racing motors and specializes in big block chevy engines.He has built numerous engines for me and I have always been completely satisfied.If someone has something else to add to this please inform us.I have nothing to do with this engine,do not know the seller,and am not interested in purchasing it but was curious and asked my machinist about this.I do not see where he is incorrect,I do not see a problem with resleeving an engine!Why would you not be able to do this back to the original size.Why would anyone think it would run hot,by going back with the smaller bore sleeves ,seems to me it would run a tad cooler due to the thicker sleeve.If I am wrong please correct me.

Bobby