- Joined
- Sep 26, 2003
- Threads
- 117
- Messages
- 11,207
- Location
- Lancaster, Ohio, USA
- Website
- www.tlcperformance.com
The air rail port in the head is the same size on every F, 2F, 3F that I have seen. The Toyota OEM or TLC aftermarket Allen plugs will definitely thread into a 79 2F head.