If you decide to follow through make sure the o-rings are rated for E10 fuel. I also wondered if the original was round and looked square from years in place or was a square cross section o-ring. I took a leaking one apart but decided against trying a rebuild myself. I was worried about re-crimping the housing and getting good seals at it's rated pressure.
Also, the one by the electrical connector seems tough to get to since the wire connections seem to be staked.
I would say to either convert to one of the newer pumps with a hose and fitting change, or send out the original for rebuild.
Fuel Injection Corp. is highly rated.
https://fuelinjectioncorp.com/products/fuel-pumps/
