I have a bunch of Holley CAN gauges for sale if anyone interested.

I may be selling these, pm me if interested.....

I'm still doing some research....as efi is new to me ......I do have a distributor from 502 efi motor I believe I could use this....any comments on this thanks

Depending on what system, yes you can.
there are a few that require a dual sync signal in which case you can't. It also depends on the injection mode you want to use.

Jeff

Thank you for the reply....was thinking Holley hp....I guess the difference would be mpi vs sync

if your going to run crank trigger and cam sensor Id run the dual sync..........single coil and generic efi the merc dist will be fine

What system is that? square port?

HP multi port, rect port, 1000 cfm billet TB's, ID 1000 injectors

Sweet setup! idea on price?

that depends on what all you want, if your serious send me a pm and we can talk.........