Cam shaft mix up

[Cadaverous]

So I'm currently doing a head gasket job on my 5vz and I made a little mistake. I got the heads back from the machine shop and I pulled the cam shafts that need the service bolt put in. I took them down to a local shop that works on toyota's and they happly put in the bolts. However I made a mistake by not marking them. So now I don't know which cam is for which side. Are they the same? Does it matter? One cam has a 21 cast on it, one has a 22 cast on it.

I did some searching and I can't really find anything. Any help would be great.

Edit: Never mind, I can see where the service gear has worn on the other cam shaft.

 

[fblainen11]

For science, which one went on which side?

 

[Cadaverous]

For science, which one went on which side?

I'll check. I'm not sure the numbers are uniform. However it was very clear where the gears were meshing prior. So I think it would actually be hard to mess up.