No, it won't affect legality. But if the law in your state says "as long as you make a new plate, then it's legal"... nah, it is unlikely any state would pass a law like that.

If your goal is to fool the inspectors, Yes, it might work. That's called 'fraud'.

Would the plates make my b10 with A15 legal? Is this how they cross check which engine should be in my car or do they do it some other way?

I'd certainly be interested in one if it could be etched with my specific engine number.

Any update on this?

Would you be etching all the numbers in (ie would we have to supply you with the chassis and engine number)?

Not wanting to hijack the thread, but in a similar vein I have a custom made Datsun "A" stamp, it is an exact replica of the "A" used on A series engines, very useful for restamping blocks that otherwise might give grief at registration time.
Please PM if interested.

hmmm
A KB10 with A15 would be nice

I will definatly take 2 or 3

Hey Guys, thanks for the feedback. Looking at having them done sometime in the next 6 weeks.

Price wise, not final as pricing isn't confirmed, but probably around $35-40 + a few bucks shipping which I think is reasonable if the quality is good.

a new one by itself would be cool

i'd be interested in a CA one if the price is right

Interested, how much and when are you looking at having them done.
A15,coupe