I haven't done this for a few years, but I recall using a variety of wrenches. A few nuts can be done directly with a socket wrench and extension. Others are more difficult-one approach is to use a smaller wrench set, such as 3/8 or even a quarter, perhaps having to use the U joint rather than the ratchet to get the right angle. The inner (long) stud I can't recall ever getting on with anything but a very small crescent wrench. Of course torque wrenches are normally 1/2", so you either have to adapt down to the smaller socket or do it by feel. I have found that 35 lbs is about as hard as I can crank a 3/8 with normal handle length. One can do the easy ones by hand and check them with the torque wrench to calibrate oneself. There are likely tools available to do this more methodically, but I don't have any. Have always been successful using this approach.
Don't forget to tighten sequentially from the center, preferably incrementally, to avoid breaking the manifold (easy to do.)
