thats for the EST dist, and yes the advance curve is set in the module and the marine ones are usually different form the auto ones, and also MSD has been terrible the last few years on these, magnectic pickups etc failing...and yes they are outsourced from china...nuff said...MSD=may soon die

I have heard a few people running the DUI set up and have good things to say about it. I plan to upgrade power and switch to a carb set up soon, and thinking I am going to go with the DUI set up.

I am running a DUI also and it is a great unit. Plus parts are readily available.

I'm running MSD pro billets with blue boxes but I see no advantages over a HEI setup except for rev limiters, which is what I have in my 69 Tahiti jet. Are there any?

exactly...can't beat a H/P HEI for cost & reliablity...if I did not have to run one to trigger our EFI I would not...