I did it on a mid-90s MTB, designed for 80mm-ish travel forks. ran 700c wheels front and rear. Old Dia-Compe road caliper on the rear brake bridge worked great. I used a 395 atc 26" fork with a long reach 1999 RSX caliper for a while, then went with the road fork and a short reach Gran Compe.
Rear, with 700c x 32mm tire
Front with 395 atc 26" fork, long reach RSX caliper
Front with Dimension road fork and short reach road caliper:
Couple of overviews, all with 700c wheels.
Road mode with 26" fork
Offroad mode with 26" fork
Road mode with road fork
It's a Park Pre 825 Pro, IIRC. Made for a pretty good road bike, but too stiff for my taste. The comfort level was acceptable with 28mm+ tires.