I normally use a walbro intank which is 255lph and run between 35-40psi but that is on a gte. I would assume a na is not much different. I believe you can use a holley or aeromotive external pump along with regulator set at 35psi and be ok. I even think walbro makes an inline pump. I will check it out. Yup its a gsl392 check summit.