Well a couple of weeks ago, I got overly excited about receiving my V5 form, until I noticed on the front page Note 2 (picture 1)
2 SVA/IVA cert issued 13 06 2017 emission limit %CO 0.3n 0.2 FI HC 0.02FI; LAMBDA 0.97 - 1.03.
Looked up the figures and they seemed to pertain to a post 2012 car with cats fitted, so my car would never meet the values if required.
Emailed the DVLA and they said it was because AOH had been put in one of the fields on the IVA certificate A was amateur build O I cant remember what that was but H was emissions catagory.
They phoned me to say as they were not technical my evidence that I had a 1971 engine meant nothing to them, and I would need to speak to VOSA who do the IVA tests and get them to issue another IVA certificate so it could be changed.
Rang the DVLA helpline and a very helpful lady gave me the email address to send my information to. Sent them everything including my engine date certificate, and was emailed details of my case worker.
In the meantime my IVA tester had returned from holiday and read my email so phoned to say there would not be a problem at MOT time and they should only do a visual test. problem is that may be OK at present but I did not want any possible arguments in the future so needed it off the V5.
My case worker emailed me back to say I was correct and he would get it off the V5, eureka, he also noticed a small error on the chassis number as they had it starting SGF on the V5 instead of SGT so he said he would get that changed.
Today my new V5 arrived with all amendments completed, (picture 2)
Have to say DVLA and VOSA have been really helpful and efficient in dealing with emails etc. It was human error that caused the initial problem and with anything involving humans mistakes can be made, I think i made one once. All is well that ends well and I am now a happy bunny.
At least I will be if I can get the car to run properly

so I can actually go for a maiden drive, so near and yet so far cest la vie.