twin fuel pump conversion

[sik sv]

Hi all I have a 5.0 vn with the long range tank and twin pump set up ,recently I have had problems with the plumbing inside the tank, and shortly after the high pressure pump died. I replaced the HP pump but left the internal LP, now the car is cutting out on me and I'm assuming this will be the internal pump. My question is has anyone gotten rid of this setup and gone for a single pump setup, if so what has worked? big internal? big external? what pressure/ brands etc, all input appreciated.

[sik sv]

P.S. the car is a relatively standard HSV other than extractors, exhaust, K&N.