Pretty off the wall item here. I've been doing head porting for 30 years now and cut apart a supercharged head for the 3800 to see what I had to work with for my own stuff. I don't offer to much porting these days so I'm offering my tools now. This is what you did back in the day and currently still do if your the guy that does the actual work and porting. That in itself is pretty rare I know. Ive seen work that people pay for over the years and it's pretty sad imo.