There should be three hoses to your fuel pump, one from the fuel cell to the fuel pump, one from the fuel pump to the top of the carb, one from fuel pump (center hose) to the side or lower part of the carb on the right side. The one in the middle that connects to the side of the carb is the vaccum hose, that is the one you want to connect to the valve cover.
I would guess the jet is a 92 and was just hard to read, very unlikely someone would have it jetted as low as a 52. The carbs come standard with a 94 and 98 jet. These jets when run with a restrictor run very lean. Most who run a restrictor run a 110 jet for both cylinders. The black "screws" on the carb are for adjusting the fuel flow. You should start with the screws 2 1/2 turns out. One of the best ways to check to see if it is running lean or rich is to have your driver kill the engine right before he is slowing down to leave the track and then pull the plugs in the pit area, this will give you the most accurate readings. If to lean turn the screws out a little, to rich turn them in a little. Air flow and jetting are VERY critical when running a restrictor. Make sure your air filter and air filter sock are clean. As far as the cylinders, the 1 is closest to the rear of the car, thus when you pull the carb and turn it over the "hole" to the left is #1 and the "hole" to the right is #2.
Also, does your track have a gear rule? Our track has a minimum gear rule so everyone runs the same gear. At our track all the experienced drivers flat foot it around the entire track so momemtum is very crucial, thus everyone runs a 15 clutch gear more maximum top end. Once your driver gets more experience run a 14 or 15 clutch gear. Run a rear gear that will keep you right under hitting the rev limiter.
Dan