When I bought my last kit I layed out the pipe route in my head and made sure I was able to built the piping i needed with the kit I bought. Some kits come with different bends so its good to have a layout before you buy a kit. And I did not use all of my pipes so its possible you dont have all of them if you got it second hand.

98 Eclipse GS Turbo
Built motor - MS2 - Holset hy35 - Zoom Stg 4 Clutch - 57.5mm TB - ARP Headstuds - Turbonetics wastegate - 3" Turbo back - FMIC - Greddy RZ BOV - Walbro 255 - 650cc Injectors - Fidanza Flywheel - Cobra calipers w/ 13" Rotors - Oil Cooler - DevilsOwn meth injection

1981 Chevy Scottsdale
1987 Nissan 300zx - Chump Car
2001 BMW 325i