I know it is of topic, but Vapour lock can be a real problem with roveV8. I fitted my electric pump to cure the Vapour lock, which it did for a time
Finally cured, I hope for good by following the instructions from Chris York in P6 Club magazine.
I do not think that it is a copy-right issue: make sure that the return hose from the Carburetor tower to the Radiator is clear. In my 3500, the outlet from the Tower was clogged with some muck. Cleared out with a 5/32 drill and the small screw-driver, and o problems since. No vapourisation even in the heat of last summer..
Another point; you might want to put a restrictor in the return to tank feed when you fit an electric pump to sop it running continuously. i used a restrictor with a 1/32 in dia. hole in the return feed, so you get a slow ick from the pump when he carb. chambers are full.
I seem to remember that Facet dealer told me that Facet pups ae continuously rated, so the restrictor is not needed.
I am aware that there are many ways of fitting an electric fuel pump, and I am only offering my experiences of doing so, which achieved is objective, curing the vapourisation nd keeping my 3500S on the road all the year.
I believe that the matter has been extensively del with by Chgris York et al. in P6 Club magazine and it might be a service to have this information available to this Forum.