The cr will change so obviously the map would need a tweak depending on how close your map is in the first instance..

As for porting that wont have any effect on the heads depth..

Its not ideal to run a head thats skimmed to depth but on an engine of your spec it will be fine..

Back in the day when works teams starting raising cr the actually started to skim the heads lower than yours just to get the cr up!!!

Ive seen a few perfectly good heads skimmed to 137,7 just to get the disered 9.1 cr they needed!!



cheers danny