has anybody use this setup looks affordable and easy http://www.diyautotune.com/catalog/-c-53_69.html

Never used those kits. But they don't include a fuel system or intake system. Looks to be just a controller and wiring for said controller.

my 84 started life with a v6 the previous owner put a 91 305 from a monte in it with a carb.(semi hack job) I have a tbi with manifold for $100 and can get a stock Ecm and harness for another $100 just to get it running but am considering getting the squirt because I like most of us here like to tinker. Plus if I decide to sell the car I can go back to oem ecm and put the squirt in the next one or use it as a selling incentive. I was just curious if anyone here had tried the unit and how they liked or disliked it.

Jerry from DIYAutoTune.com here. Thought this might be helpful: http://www.diyautotune.com/tech_articles/megasquirt-carb-to-efi-part1-nova.htm

These systems are running on thousands of cars, you put a bit more work in than some systems (if you build it yourself especially), but you get a killer EMS for a killer price. Check out a few of the cars at http://www.diyautotune.com/cars/cars.htm, some of which are record holders like that 249mph BBC TT Studebaker.