Pics are still not working in the first post. Can anyone provide some visuals?Here is the how I got the K20a2 cams to work on the K20a3 head. You need the K20a2 cams (or type-r, tsx, crower...), K20a2 rockers and pins, and k20a2 rocker shafts. The pins in this picture are how they come in the A2 head
You have to switch the pins in the left and middle rocker like this picture
This locks the left and middle rocker together so that the middle rocker will not bounce around due to the cylinder head not having the lost motion spring.
This makes the left valve always ride on the vtec lobe and the right valve rides on the non-vtec lobe. When vtec is engaged by the solenoid it locks all three rockers together the same way the factory does and you have a regular working vtec.
Edit by Signalpuke:
More info on Rockers here which rocker to choose??