Yes Jeff it is an early base the same as the one I opened up the other day. Belt height down from the top of the deck is probably the best height to use as long as you are somewhere close to it. If I hadn't sold the last one I set up (it had a factory Briggs on it and I put a F/C on it, on that one I left the boss on it and just fitted the pulley off the Briggs straight onto the boss
