You do not really need a specific conversion for your car, you can use 71 specific components (tank) and still do it. There are essentially 3 methods to accomplish the tank or fuel side of the conversion;
1. use your existing tank and an external pump. You will need to add a pre and post filter (same for any EFI system). The down side to this is that the pump does make some noise but for most that isn't a problem, also the pumps tend not to live as long as internal pumps due to heat (internal pump remains cool because it is surrounded by fuel). How long an external pump will live is kind of a relative term, meaning it will probably live a long time commensurate with how much you use the car. External pumps were used for a long time in production cars and would go 60 - 100K miles. You may have to run a return line and might have to figure out how to connect it to the tank depending on your tank's configuration. A 71 should have a vent line or perhaps an Evap line that could be used. You will have to vent the tank or the gas cap as well. An upside of this method is that the pump can be readily accessed if there is a problem or you want to go to a different/bigger pump due to making more HP.
2. use your existing tank (or a new replacement) but modify it buy installing an internal tank. There are kits out there for putting an internal pump into the tank which requires cutting a large hole into the tank and installing a pump. This method was done (and still is) for a long time before EFI specific tanks were being made. The pro to this method is a lack of noise and keeping the pump cool. The con is that if the pump goes out you will have to drop the tank (unless you install an access door in the trunk).
3. get a custom tank made that is EFI ready. There are several companies that will make you a tank to your specs. The down side it the cost, most are $450+, however the tanks are robust and very well made in most cases.
The fuel side is normally the hardest aspect of the conversion, but it isn't that difficult and the conversion is well worth the effort.