Not sure what process you are using to brew. If extract, I understand they sell munich malt extract, you could whip up a recipe with like half munich extract and half regular extract to resemble a bock. Or, if you are doing all grain, just follow a bock recipe and use a neutral yeast like s-05, 1056, nottingham, or wlp029.....but you gotta keep your temps lower than 75
I would visit the swamp bucket technique if your temps are 75, or else you'll get too many esters and fruity notes. I favor the swamp bucket, wet t-shirt, and fan technique....not expensive at all.