The Integra has never been an Accord. The first-gen Integra was based on the Honda Quint, which used Civic mechanical bits. The second and third-gen Integras got platforms that don't correspond to any US-market Honda products. The only Acuras that shared major mechanical bits with an Accord was the Vigor, which was based on the Japanese market Accord Inspire/Vigor twins (Accord with an inline-5), and in a very oblique way, the first-gen Acura Legend, whose 2.7L V6 eventually found it's way (with minor changes to the block and heads) into the 96-97 Accord V6.

As far as silly bodykit questions, it's easy. If you chop stuff apart anything will fit anything. There's some kid up here who has managed to fit one of those really ugly Veilside-ripoff Honda Civic front bumpers to his SVX (don't ask me why/how). He chopped the hell out of it and fiberglassed in whatever didn't fit right.