Unless you can find the msd6 used cheap. A new msd6 and the wiring harness is going to cost close to $1000.just to run a carb. If I was going to spend that much I would rather just go EFI. But damn stuff has gotten $$$$$ to buy. You used to beable to buy the complete holley terminator X for around $1500 or a little less. Now I see it's up to $1900. Damn I picked the wrong time to start building a stroker gen3 hemi engine. To the OP the MSD hemi 6 is the igntion system for the gen3 hemi engine