I know that some of the Escorts and Lynx used the TFI ignition on their 2.3L engines, but these engines weren't rated to the RPM's you're talking about, so I wouldn'tnecessarily trust that ignition set up for your application, at least with the factory parts. For example, distributor gears break, and it can be big bucks worth of damage as a result if anything ends up in the wrong place.

I know that on  a Nissan site I visit, there is a lot of talking going on about a Petronics? flamethrower ignition as being something "great", but Ihave no personal experience with it.

For that matter, I used to run a '67 Mustang, a combo street and daily driver,
with a dual point ignition set up(Mallory, I believe) in the 70's, using a self built Heathkit Capacitive Charge ignition for spark energy that was rated to run faster than my engine, which topped out at about 6,500rpm.... with the cam I had in it last....
That's 30 years ago, wow do I feel old.

There have got to be racing application ignition systems that drop into a 2.3.

just keep watching the racing parts on ebay. good distributers keep popping up on there every week. now that racing season is back. that or make a visit to esslinger. but you might as well walk in the door backwards bent over!