Right on man! Welcome👋
Yea it's not a super popular genre of RC, but the people that are still into it are usually long term.

That video is a gem! These cars, and nitro drifting are very underappreciated. Most just don't know the capabilities.

The RS4 would he great to drift with! Tou dont have mid-engine, but that just means suspension ntuning needs to be different.
check out "GP RC Drift Team Unlimited" to see capabilities of rear-engine 4wd drifting.

Type A tires are still in production, so it's just a matter of finding a retailer.
Tamiya Type D tires are also really good, most of the Team Unlimited uses Tamiya Type-D tires.

Im hoping too see some action here too!!
maybe some lookie lous will chime in, even if its just over curiosity rather than experience🤷‍♂️