http://hmotorsonline.com/shop/ go to this web sit and then click on jdm-usdm engines and you can search. They have multiple engines that will fit your integra. Almost all honda engines on this website can be swapped into your car although some modification is needed. If you bought your b18b(the engine you have now) it would obviously drop right in with no modification. You could even put in a b18c(the engine from the integra gsr) for a little more power if your interested. yes there is more powerful motors like the h22 but it wont drop right in without modification... motor mounts wiring harness etc.heres your specific engine with a complete change...http://www.hmotorsonline.com/shop/sc...tem=30007heres just a long block...(which is all you need)http://www.hmotorsonline.com/shop/sc...&item=30025All of these engines are not rebuilt but they only have 25,000-35,000 original miles on them. They also come with warrenty.