Back in May I suffered the dreaded intermix in my 99 Carrera 4. It turned out to be a cracked 1-3 head. The crack was around the center plug housing. I sent the heads to
Hoffman Automotive and they repaired the crack, replaced the valve springs, reground the valves, and did a stage 1 porting. The heads look great! I've also had the lifters rebuilt and the fuel injectors refurbished. Fortunately, the injectors turned out to be the 4-pintle type, which I thought were not used until after 2005.
I'll use this thread to update progress on getting things back together and the final results. It may take until spring 2017, as there are a number of other things to take care of with both engine and car.
For now, some engine porn: