Identifying head work

[robx1r]

I knew there was some work done to the head when i took it off, what are the varying degrees of head work?

it looks like the inlet and exhaust has been widened compared to a standard head.

what else should i look for?

[newbstar*]

Send a picture in and we can help, easier.;)

[robx1r]

http://i141.photobucket.com/albums/r71/Robx1r/PC040023.jpg

intake is 28 x 30 mm
http://i141.photobucket.com/albums/r71/Robx1r/PC040025.jpg

http://i141.photobucket.com/albums/r71/Robx1r/PC050027.jpg