Stage 1 for Octy VRs 245

About to pick a used model, 6k miles so perfect for mapping. I've used Shark a couple of times before with great results, I know they've since been acquired by different company, but asny other suggestions, recommendations? It's a 2019 reg I've no idea if it can be flashed via obd2 port, but I had an STS box with my 12 plate vrs, and that wirgked well, would like a similar switchable option.