If i go with the 130" 16:9 which is almost the same width a 125" scope, the scope image would be the same size but with black bars top and bottom AFAIK, then i'll add some masking. I'm in Pakenham!
Off Topic, club rego with HSV/HDT? I used to take it to the drags and loved Easternats when it was at Sandown but i've hardly driven it the last few years got other things to spend money on!
You're correct. By installing a 16:9 screen, your image width will remain the same, only the height will change. It's the opposite for a scope screen - the height is the same, but the width varies, which is the basis for scope in the first place.
Rego is with the BCOAA. We FINALLY got them to introduce it, after a lot of negative resistance, but there's a tonne of cars on the scheme now. I've also noticed a LOT more old school cars on the road with this new scheme. It's awesome! My rego went from $560 to $66 a year. I get to drive it whenever I want for whatever reason I want for up to 45 days a year. A 90 day permit only costs around $116, which is well and truely worth it! There's heaps of clubs that offer the scheme, so something to consider...