Moved from rear to front of the Electra (finally!) on the EFI project and replaced the fuel pump with a nice solid blanking plate from JACER Enterprises (Link below) and, aside from being reminded of how incontinent the engine is, noticed an empty bolt hole on the water pump assembly. Need to find out what size bolt is required but I'm wondering if I'm going to find out it's got a sheared off bolt in there. Here's hoping not. Bob Link for blank plate on Amazon: https://www.amazon.com/gp/product/B00XD5D46G/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
That's a dowel hole. Pretty sure there are 2, one on each side. You can see the dowels in this picture, http://i150.photobucket.com/albums/s110/tspjim455/Blockmods036.jpg