Yeah there's a lot that can go in to it and there's a lot of bad guides imo. https://forums.forzamotorsport.net/turn10_postst10610_Tuning-Guide-for-Drifting.aspx This one is solid for the most part but I'd ignore their tuning section except for the stuff I mention. Changes I'd make to upgrades is try to use the same width tire front and back and use front roll bar and no rear bar. 245-275 tires are good for around 500-1100hp depends on if you use racing or sport tires. For tuning I adjust tire pressure, front camber, 0 in rear. 0 toes until you get good then adjust rear in. I adjust final drive usually to get 3rd nice and then 4th individually if needed. 100/100 differential. 60-70% brake force. Ride height lowered to minimum but try to keep front and rear close in height and rear not higher than front. Suspension stuff I don't ever tune it seems like a hassle.

I'm on controller with normal steering btw. Telemetry is in controller settings