after i ported my heads i noticed one is a 8445 and the other is a 6293 now the 6293 has one coolant passages in each corner and the 6293 has two one in the lower corners its not bridged is it ok to have an unbridged head or can you drill a hole in the head ![Eek! :eek: :eek:](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f631.png)
![Eek! :eek: :eek:](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f631.png)