B18c in an Accord

I was talkin' to this guy earlier tonight and i was telling him that i'll more then likely going to put an H22 engine in my car and he told me that the bottom ends of them are really weak and won't accept a 50 shot of nitrous. The guy has a lot of knowledge about cars he has an RX-7 that he completly built himself and has about 600 horsepower. He told me i need to puta GSR engine in it from an Integra and he said it would bolt right up. I would like to have as much input about this as possible to see if this would even work because i don't know of one person that has ever even done this.