Finally installed Gus and Walt's pressure reducing valve today. Went in 1,2,3.

Two tips:
1. Be sure to clip the zip tie holding the cables to allow the pump to slide forward for removal.
2. As the instructions note, the convertible top hose angled fitting can impede screwing in the #1 hose. I didn't want to loosen the fitting and possibly induce a leak. Nor did I want to use much tightening pressure on the fitting for fear of cracking it. I found that by backing off the hose fitting nut just a few turns (too far and it will likely drip), you can provide sufficient clearance for screwing in the #1 hose fitting. Then just remember to retighten the nut.

Now I'm going to forget about green showers and just enjoy my top down driving. Thanks to everyone who contributed to the project!

Good work, happy driving.