That sounds like a fantastic modification for the International Transstar in FS25! Adding a multicolor paint job and custom wheels can really give your truck a unique and personalized look. With a power output of 400 and a max speed of 80, this truck should have plenty of performance for various tasks in the game. The price of 45000 also seems quite reasonable for these modifications. Have you tried out the mod in the game yet? If so, how does it perform compared to the stock version of the truck?