Thanks BB, i found some online. To me it comes down to being comfortable with a "guarantee" that this will be a straight swap onto mine... I understand there are 2 shaft sizes to be aware of however not sure i feel right buying a chonda without exactly knowing it will fit. There are brief measurements on there ebay listings however one of the suppliers for the briggs was able to check the model number of my current engine to confirm their latest briggs will fit with confirmation in writing.
