my engine blew and I'm replacing it with another B18B that has less miles. its going into a 98 integra. my question is do I take a out the motor with tranny or leave the tranny and take out just the motor what's esier?

 

You can do either, but it's likely easier to mate the new motor with the tranny outside the car and put them back in as one unit. That will take some extra time to get out (axles, tranny mounts, shift linkage, etc), but could save you lots of time lining the tranny/clutch up when you put them back together, with less risk of damaging your clutch.