Here's a quick follow up on this topic. I got my FIP and CSV back from H&R a week or so ago and today got in installed. I also replaced the fuel tank, changed the fuel filter, changed the engine oil which reeked of gas from the leaking FIP, and changed the oil filter. The oil filter was a bit of a diversion because I discovered it was missing a key internal part and hence not really working before.
With all that sorted out, I bled the injector pipes, tightened them up, and presto, the engine fired right up. It sounded pretty darn good - way better than before. Now I get to go though and do a proper tune up to really get it running right, but at least the FIP, CSV, and WRD are in tip top shape.
The best part is that 3 of my 4 SLs now move about under their own power. I've been getting pretty tired of pushing, shoving, towing, and winching them around.
Oh, and the pump looked spectacular after Hans's work. It looked brand new with new screws, everything plated and shiny, and little paint dabs marking the screws. I couldn't be happier, and he turned it around in less than a week.