89 5.3 v-12 rebuild

So folks my 89 xjs two locked up cylinders anti freeze in the oil will start except the grayish white exhaust indicates antifreeze getting into fuel system/cylinders? What can I expect a rebuild to cost? I’m in ABQ NM if that matters
Thank you

Hello Tom - jump over to the V12 Engine section of this forum and you will read a lot of information about the rebuild - Tex.

If compression is good in all cylinders and no other obvious problems, you might get away with just head gaskets.