Hi Guest!
Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
STOP!! Never post your email address in open forums. Bots can "harvest" your email! If you must share your email use a Private Message or use the 
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
billspohn
Jedi Knight
Offline
You do know that the 16 head is identical to the 18 head (valves, chamber size) except for the '16'?
I'd grind the '18' until it looked like a 16 or grind it off and defy them to tell the difference, or grind it off and put it back with weld as a 16 (you need a steady hand!).
If you are desparate, I still have the original engine from my TVR but I wouldn't want to sell the head without the engine.
I had a rare factory TVR Weber manifold that some twit had bored a hole in - I plugged it with JB Weld and you can't tell the difference - right through one of the 'TVR' letters
I'd grind the '18' until it looked like a 16 or grind it off and defy them to tell the difference, or grind it off and put it back with weld as a 16 (you need a steady hand!).
If you are desparate, I still have the original engine from my TVR but I wouldn't want to sell the head without the engine.
I had a rare factory TVR Weber manifold that some twit had bored a hole in - I plugged it with JB Weld and you can't tell the difference - right through one of the 'TVR' letters