keep meaning to take my head down the local shop , as they can do the work but i need to sorce some larger valves as they obviously wont be standard, any ideas???

talking about the 8v se head in case anyu one wondered.

also quick question , my spare head is from a 1.8se engine which has the same head, BUT are the chambers and valve spacing the same , im assuming they are but cause the 1.8 has smaller bore (like 2mm) than the 20l it may be an issue???