Swifted wrote:what sort of 'head mods'? have you commissioned someone to do it arredy?
This is the head-work I did on my head;

And this is an SR16VE head i recently did for a friend;

Breds... a couple points you may want to investigate (
for your future jobs)
1. Quench ares inside the combustion chamber. It doesn't seem like you paid much attention to the chamber, but there is some detonation protection to be had here!
2. Removal of sharp edges in the combustion chanber... these will form hot spots and will prematurely induce detonation and effectively limit the timing tune. If nothin else please remove these.
3. short turn radiuses... seems like you attacked that area in the bowls also wich is usually not in the best interest of flow... even if it may appear so "intuitively". I dont think there is an "un-do" button for that one.
4. well I suppose these pics were taken before you re-surfaced the valve seats, I'm sure a few machine shops have serdi machines. Reminds me of a funny story of sime mechanics using and old valve as s grinder for the seats....LOL
just for consideration IMHO