What will I need to install a shower toilet sink in my basement drain and vent

First can you tell me where your current sewer drain exits the house, through the wall or through the floor. This will make big differenc in how we approach the drain issue. Can you reach the existing vent stack from wher you plan your new bathroom?

what will i need to install a shower toilet sink in my basement drain and vent
Most basement bathroom groups are roughed in like this.
Toilet connects to sewer main with a wye or combination wye and eighth bend. Lavatory connects to toilet drain and runs a vent off the top the stubout tee out the roof or revents back into a dry vent in the attic.. The toilet wet vents through the lavatory vent and the tub/shower connects to the lavatory drain and is wet vented by it. This is a normal rough in and is acceptable both by local and state codes and also The Standard Plumbing Code Book in 90 percent of the country. Check your local codes.to make sure you're not in the excluded 10 percent.. The vent off the lavatory may be run out the roof or revented back into a dry vent in the attic or if you're reventing back into a fixtures dry vent you must make your connection at least 6 inches over that fixtures flood rim. Good luck on your project. Tom