ok i have a big problem...... i have these dart pro 1 225's and idk what to do with them!!!!!!!!!!!!!!!!....

they were for another project but that project is gone... now here is my options....


as your know the nnbs 5.3 come with 243 heads....

but i also have some NIB dart pro1 225cc heads that have been ported.. and can be milled..

heres the options.

get the 243's ported and get cometic to make me some MLS gaskets


put the darts on there (ported) , and possibly milled enough to get a 11.1 compression ratio with cometic gaskets.


what do you guys think.. possible gains going with the ported darts over the ported 243's?...