@dreamer al Simsync is not "fishy". It is used for many leagues to make installation of modifications easier for the racers. We have used it for years. But I understand if you choose not to download. Unfortunately for you though, it is the only way you can get our IndyCar mod at this time.
Curious what you mean by "could not gain access to download mod"? Did you have some sort of technical issue or you just mean you chose not to download simsync? Feel free to PM me if you have any issues with our website or Discord.