Looking for a generator for "60" that did not have one on when acquired.  Want an idea as to whether need to look for specific numbers or can use multiple generator numbers.  Need pulley on this as well and from what have found @ local electrical shops there are some differences in length of armature shaft.  Then you need to use spacer to adjust pulley to line up with water pump, if you have enough shaft length to secure nut on end.  Not knowing necessarily that all pulleys were same diameter and width could run into problem with adjustment and or clearance to curtains. Also there is differences in line up of mounting bracket with reference to where adjuster bracket bolts to front.  Are there major differences in amperage output or will most any of adequate length suffice for this "60" application?  I have cut out, just need to find mountable generator with proper size pulley etc. to make a workable unit.  Thanks, John for any assistance!  Terry