When Salvinos started they had Monogram Nascar molds which they acquired from Revell. Those were already 1/24 so that is why the kits were (are) that scale. The Monte Carlos, Buicks, Oldsmobiles, Fords, etc.

I am guessing they stayed with that scale on the Camaros and Mustangs - - maybe because such things as tires and other parts could still be used on new kits. Saving tooling costs. (?) I'm not sure.

Only in the U.S. do we really use 1/25. But when you are a company selling models the goal is to sell as many as you can - world wide. So I can see why 1/24 - which is what everybody else uses - would be a good plan (to increase sales). Even Revell has been making some of their new kits in 1/24 (such as their Mclaren 570s).

As others mention, 1/20 is the scale used on most F1 cars (Indy cars are different kinds of cars though).

Hasegawa and Revell F1 models are usually 1/24. Tamiya are usually 1/20. This is excluding older F1 models from Fujimi, Wave, etc which could be almost any scale). But many of them also did 1/20 kits.

Hasegawa kits normally do not have an engine. They issue special editions sometimes that do - but most of them don't. Tamiya F1 kits usually do have an engine (except the older kits as mentioned - with the electric motors or other stuff from the early days of modeling).

When I first saw the photo from Salvinos I thought they were going to reissue the older Monogram Indy Car kits. Those were 1/24. But as I read further these new ones were going to be 1/20 so that gives me the idea they are all new (probably).

Salvinos kits have always been (on average) a little more money than say AMT or Revell. They are made in the USA which at first thought might increase their cost. I'm not sure. Atlantis makes their models here too - although most are reissues - but they have some unusually low prices on their kits.

I want to build one of the Salvinos kits, the Toyota Camry. And eventually I will get one. But I have to admit there is a long line of AMT and Revell kits I want more LOL

I have zero interest in an Indy car (and to be fair I have no interest in F1 cars either).

Whatever happens at least they are trying to make new kits and that's a plus for our hobby.

(Footnote: I wish the Salvinos website was way better. It has very little info on any of their kits. No pictures of what's in the box, no downloads of the instructions, no mention if the model is molded in color or white. Some are molded in color so if you don't like that NAPA paint scheme - you better have a lot of primer handy LOL