Is it needed? or can I just run the fuel lines directly to the rails and bypass all that emissions junk?

 

Yes u can just run the fuel lines direct to the rails,
if your car pulls check engine light , then just connect the solenoids back to the plugs,

 

^ You are quit simply looking over the facts of emissions. If you have emissions on your car you will have a butt load of lines and T's running off everything and let alone the PITA of tracing every rout through the spider assembly to fined out how to hook them up.

If you have emissions keep it if you don’t chunk it block off the parts not needed.