Nothing really that I can think of. The only thing that would come close to being a bolt-on job is probably an 88-91 Civic front end, but why would you want that on your Integra? Seems like it would be a downgrade.
If you really can't stand the DA front end then honestly I think you should just get a different car. Any newer front end that you put on it is going to look funny because (like I said earlier) the DA is boxy and all the newer cars have a lot more curves. Any way you do it I think it's going to look funny.
I suppose you could go all out and do a front end conversion, rear end conversion, widebody, whatever, just totally make it look like a different car. But at the end of the day you'll probably have spend upwards of 10 grand, and I don't know about you, but I'd be feeling pretty dumb if I dumped 10-15 grand into a 14 year old car to try and make it look like a different car, when you could have just bought that different car in the first place for a lot less money.
Not trying to discourage you, just giving you my honest opinion. It's your car man, do what you want with it.