Heads issue

Looking at those ports...It doesnt look like too much has been done really. I'm sure they can be improved on. As far as valve size, I wouldnt waste my time with 1.88s at this point. 2.02s will site further out without replaceing seats, and IMO you will not notice any "loss" of low end with anything over 10:1 true compression. That's just my opinion tho.