The D15B2 in the HF had 62fhp, which would translate out to about 53 wheel horsepower... maybe less. The D15B2 of the DX had 92fhp, or about 75 whp. Check to see if the valve cover says 16 valve, if it does, you got lucky. If it has a full D16A6 head and manifold, that would put you around 102fhp, 85whp. If the head has been swapped, who knows what transaxle you have.

His Integra is stock 140hp, so guess 110whp.

All numbers are my own personnal educated guesses, as I have obviously not tested all these engines, hybrids, and transaxle combos.

Stock for stock, the Integra would walk away from you, but who knows what you have under the hood... you better find out soon.