My 93 had 272K when I bought it 3 yrs ago..
I'm getting ready to turn 325K.
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'93 D250 CC auto, 18.5cm w/30 psi - 32 psi w/TC locked, 366 spring w/1 turn clipped, power screw bottomed - backed off 1 turn, modified Ol Smokey's power pin, smoke screw fully out, hat modified to get pin higher - still smokes, '94 trans w/clutches and some hard parts, 4510 w/4 1/2" intake and heat shield, grid htrs mia, 4" dp into 5" pipe to single 5" stack, 285's rear 265's front