Guys,
From what I have read the points made are these
1) Ideally change the name of the vehicle before you kit it up, this way the standard car goes for the VIC and you can call it what you like.
2) If you haven't done this then change name take for VIC, however make sure the Vehicle Identification is visable otherwise you may need to have the chassis re-stamped.
Either way looks like a Q is out of the question as long as you can prove that the car is the same one on the V5.
From what I gather a SVA is not required unless you openly tell them it is a radically altered vehicle which I believe would be at your discretion. At this point you would need to score enough points for the vehicle to be deemed as being the same car rather than a mishmash of parts.. i don't see why anyone would want to do the later to be honest, however I would have thought the running gear engine, gearbox, interior would be enough as this seems adeqoute for most kit cars with custom built chassis's and bodies. So I think the SVA is at your own risk. Remember this is a re-body not a different chassis, so I guess its down to intepretation on what a radically altered vehicle is
As an example, I have seen covin porsches that have the covin tube chassis and body say covin on the log book yet retain the beetle reg.
This is what I have read from the posts and looking at other conversions, I may be totally wrong
Just my two pounds fitfty.
Scott