The names are what complicates and confuses things.
First, there was Vintage Speedsters: Kirk and Mary Duncan, with a shop in Hawaiian Gardens. VS was the 900 lb gorilla of the replica Speedster jungle- they built over 3000 cars, hundreds per year, with about a one month wait. They were built quickly, to a price point. They were nice looking cars, with some issues baked into the process mostly as the result of the pace at which they were built.
There was a young man who shared shop space with Kirk and Mary in the 90s named Greg Leech. Greg also built replicas -- replica Spyders, and he called his company Vintage Spyders. Eventually, Greg moved out and renamed his company "Vintage Motorcars of California". He added Speedsters and coupes to his lineup, although production was very limited.
Things rolled along like this for many years until Kirk and Mary were ready to retire. They sold to some guys from AZ, who renamed the company "Vintage Motorcar" (no "s") and initially kept production at the facility in California. There was a falling out with the employees over holiday pay, and the new owners made the fateful decision to move production to AZ.
Greg Leech saw an opportunity and seized it. Greg moved his company into the old Vintage Speedsters facility and rehired the old production crew. The company in AZ eventually sold.
It's not been all roses for anyone involved. The company in AZ built a few cars, then folded. Greg's company (Vintage Motorcars) was swamped with custom orders and fell way, way behind on production. Eventually, Greg stopped taking orders for coupes and Spyders, and stopped offering Subaru drivetrains as an option. At the same time, the value of his cars skyrocketed -- due to the law of supply and demand, but also due to the rise of Bring an Trailer and a dealer named Cloud 9 in Atlanta, who found a market with no upward limit on BaT. There was also the happy confluence of Intermeccanica going into the electric car business and eventually exiting the replica Speedster business, further choking the supply.
At this point, there are guys on this board who have been waiting on special cars (Spyders, coupes, and Subaru cars) from VMC who were promised a spot in the queue before orders were shut off) for more than 3 YEARS. At the same time, standard air-cooled Speedster builds have been in steady production and bringing long money on the open market. A choked supply and deep confusion over the names (Vintage Speedster, Vintage Motorcar, and Vintage Motorcars) has caused all of the cars to rise in value, as much as 300% over the last several years. None of this is helpful for the guys waiting in the VMC queue.
I'm not sure what you're after, but this is the lay of the land. A "Hawaiian Gardens" Speedsters means nothing, as it might be a Kirk and Mary Speedster built with some haste to a price-point... or a VMC car, built with better stuff, with price as no object.
Almost nobody will speak plainly to the point, because there is a vested interest in not rocking the boat. I have the car I want, and no dog in the hunt -- but that's the lay of the land. It's not like dropping by the Chevy lot and picking out a new Silverado.
Good luck.