Yep Flying pram, that can make a big difference and older aircraft have written down values for use in CAA approved flight tests for ROC for example. When CAA FU approved checklists that I have produced in the past as part of an aircraft approval for flight tests and cpl/ir training the items they were concerned about were: to make sure that the emergency procedures were identical to the ones in the POH. Otherwise one SEP checklist is much the same as any other with a few slightly different V speeds, and pther diffferences re complex items such as VP props and retractable gear. IMHO there is no "one big book" to fly by as for many situations the variables are many and varied even in POH there are options printed for use with floats, autopilot etc that are not always fitted. That is not to say that CofA items can be disregarded.