I found a source for component parts of the fuel pump assembly. Quantum Fuel Systems at [You must be registered and logged in to see this link.]
They don't list the GRiSO in their menu but I found a regulator that matches- p/n HFP-PR11. They also had a flex hose with clamps-p/n HFP-FH89-210-PX.
I got an aftermarket pump from Harper's and it ended up being from Quantum. It's a universal pump kit and includes a boxfull of new strainers, none of which
matched mine.But it does include the short rubber hose. Buy direct and save a few bucks, kit p/n HFP-382-U. Hope this helps anyone trying to avoid the $800
replacement cost of fuel pump assembly. Total cost of pump, filter, regulator and hoses was less than $140 shipped.