There are "non module" in tank pump/float assemblies on earlier efi gm cars/trucks that mount with the same lock ring setup used on carbed cars for fuel pick up and sending unit. Check your ring size and go visit your favorite used part places. Very easy to modify the pump height/float arm on those. Let me know if you want a few pics of what I'm describing.
Dont get too concerned about the pump being good or if TBI setup as there are other pumps new that will meet your fuel pressure/flow requirements that can easily be fitted. The float arm can also be shaped as needed. Pumps for these are usually much cheaper than the module type. Many of the module types are hard to get only a pump for it or very hard to change out just the pump. (without breaking something)
You can of course baffle your tank internally if you want instead of adding a sump.
On the high power end Aeromotive pumps can be installed in-tank and they also sell a really nice, well baffled fuel cell with your choice of A1000 or Eliminator pumps already installed.
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