Yep, I've been using the Jesel distributor for awhile now on the dyno engines. It is easy to set up and seems to work really well. I don't have to fight the distributor when I pull the valve covers to set the lash. Only drawback is I have to run the reverse flow water pump which I'm not so sure I like. I might build some spacers to go back to the normal water pump.
Andy, what don't you like about the reverse flow water pump?
