HS Andover C1 is the correct answer.
Doing STOL (not perf A) with water meth injection we could use 1000 FEET. Anguilla was - if I remember right - about 750 ft of tarmac with a baked mud over-run. I usually stopped on the tarmac full of metropolitan police with baggage and beer to keep them going.
6 degree approach and full reverse before touchdown.
