Lindsay Drife at @Z Shop Performancehas the following motors.
Which I've cross checked and place in cars with serial numbers in following areas:
L24-029624 - Would have been in HS30 005XX range.
L24-052485 - HS30-01190 has L24-052484 - so a VIN # close to that is likely to have had L24-052485
L24-091184 - HS30-11XXX - so a 72 model beginning in that range.
L24-018626 - Is fairly early. I'm guessing it will be out of a 70 240z with HS30 002XX range.
I hope I made someone's lucky day.
My bonnet is not to bad and definitely repairable. Just trying to decide where I spend my money, I can either purchase more hours at MotoRRetro and use there tools to repair the original or just buy a new bonnet - both have advantages
Anyway, thanks a bunch for your replies