trying to sort out things for a new motor for wagon. 1st block in way was 77 or 78 400 bare block. took it to machine shop and was discussing options for stroker. he checks bore and it is already .020 over. he says it won't be a good choice as it is only .020 from where he wants a low deck stroker to be, bore wise. do i need a new machinist or is he correct. will be street motor. not sure on cubic inch or anything else at this time. thanks in advance.