Good advice Bob because thats what I’ve run into in the past too. If theres drywall or lath and plaster behind the cabinets its just as easy and almost the same price to buy a nice looking economy cabinet and hang them yourself. If there builtin you might want to strip or reface them if you don’t want the added expense or time to do the drywall work. Go to the web and look through the diffrent ways people are screwing the styles together with clamps, its important to hold all the cabinets together with screws through the styles( the vertical framing just behind the cabinet doors, what the door hinges are screwed too.
Also use shims to place in the void under the front of the cabinet so they all run straight. Its not that hard to do, watch the videos on U-tube or where ever to get some input. Think it through while your doing it and don’t get frustrated, if you can sand a piece of plywood so its nice, have used a drill a few times and you can read a tape measure your halfway home. Watch what they do on U-tube and see if you can do it.