running the MSD 6-Hemi ?

I'm running an MSD and Megasquirt right now in my 5.7. Bought the MSD to start with because I carb'd it (didn't have the money for EFI), but I had a Megasquirt II fall into my lap at too good a deal to pass up. It wasn't hard at all to get the two to play along. The MSD puts outs a really nice tach signal the Megasquirt can interpret well. Otherwise you have to deal with setting up the Megasquirt for the crank (and possibly cam if you want sequential injection) sensors and running an extra ignitor box. I think it's a little more expensive in the long run to run the two different boxes (Megasquirt is putting together their own ignitor box that it supposed to be pretty easy to set up and work on new Hemis), but the MSD is pretty idiot proof and the software is easy enough to deal with.