Stainless exhaust pipe, water cooled heads and sodium filled exhaust valves. Gotta love modern technology.
Well actually the Ford 427 overhead cam engines back in the 60's had sodium filled exhaust valves..lol
I've seen a screen shot of a RANS S-21 at FL230 and they still had 1,600deg EGT's
Gotta love FADEC....just push the throttle and leave the rest to the ECU.