VS built cars over a very long period and made a lot of changes along the way. I bought mine new in 2013 and know a little about that period, but others here know a lot more.
There are some details on your car that could be VS, but others seem not to be. It's important to remember that for a long time VS sold roller builds that were finished in countless backyards by home builders. And they also sold a lot of parts (especially finishing parts like door cards, carpeting, seats, and upholstery kits) to folks building cars from all manner of sources.
I'm wondering, at this point, if it's at all useful to know the car's precise origins. FYI, the only thing anywhere on my car that says 'VS' is the crest on the frunk handle.
VS also used motors from a lot of sources over the years - some good, some not so good - so knowing if a motor was original to the car wouldn't really tell you too much about what's inside. My engine definitely contained some, uh ... 'recycled' bits.
Over the years, debating what the perfect engine is may have consumed more screen space here than any six other topics combined, so the floodgates are probably about to open again. But some of us think the best overall bang-for-buck sweet-spot power is a mild-tune 2110 cc stroker.
Which used to be easily had for around $6-7K, but that was before the recent troubles. My take is that the quality of the build - how it is screwed together and by whom - is more important than the size. And, as long as you're paying for quality parts and the time of a skillful builder, going a little bigger doesn't cost all that much more. Until you get to about 2110cc, though. Past that point, Type 1 motors get a bit stressed and nervous, so the expense of reliability starts to rise faster than realized gain.
And I will stop there.
Cry "Horsepower", and let slip the dogs of war.