l doubt anyone has put a blitz 2 through an sva recently and as things keep changing and getting more "testing" there lies your problem, l have a road regestered blitz 2 but it was regestered backin 1996 when all they did was walk round it and give you a number plate for the year that most of the doner bits came off, your petrol tank maybe an issue as its at the front and maybe in the passenger compartment, depends if you call the sheet steel that the pedal box is up against a bulkhead and if it was deemed a bulkhead it has no top on it so a split fuel tank would spray all over you ?
maybe we could start a thread to disscuss the latest iva rule book and work our way through it bit by bit, clearly things like the lights are simple enough they are either with in the required dimensions or they arnt, but l think it will still come down to personal interiptation such as is your fuel tank in the car or not ??
the blitz kr3 seems to be capable of passing an sva so perhaps it wont be a difficult as we all seem to think
edit: they also seem to be saying an sva test is £125 ???