fuel pressure

howdy guys,
 
  my 88 s10 blazer is running a 91 astro 4.3 TBI engine.  over the past summer the fuel tank got bashed in pretty good while rock crawling.  i.m planning on replacing the stock tank with a fuel cell, (that i have laying around from a previous truck) i'll be running an external electric fuel pump, just wondered what kinda fuel pressure the TBI needs to run.  The engine is stock except for a throttle body spacer, headers, and dual exhaust.
 
 thanks
 
    


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11-15 psi I believe.