I was at Edwards AFB when the SR-71 was re-activated then re-deactivated back around '96. P&W worked on the J58 engines in my shop. very different engines than anything else in the shop, although only a mechanic would notice the differences.
Those planes even taxied faster then normal planes. The NASA pilots would wave as they taxied by, the AF pilots usually didn't.
to make this true BITOG, max lubricant temp was 550*F, max fuel inlet temp was 350*f, and max continuous combustor temp was 2000*F
you can't light JP7 fuel on fire with a match, torch, or spark, it takes an explosion of tri-ethyl borane.