Vehicle indentification number

[Cyberbeej]

Let me get this right,

You Create your own VIN number (17 characters Upper case), where does this go exactly? and a vin plate goes where?

Get the car MOT'd on this number and then SVA/IVA where they allocate you a reg number??

Whats the average wait for an SVA/IVA test???, really trying to get it in for a SVA before the End of Feb but want it to be right so there's no hold ups.

BJ