There's been some interesting things happening in the last year or so.
In case you've missed them you might want to investigate, the Ostrich, and Prominator. Both have been well discussed here:
http://www.thirdgen.org/techbb2/forumdisplay.php?forumid=16
You'll see mention of Moates Web page, who is a great source for the parts for doing the conversion to be able to do *On the fly tuning*, if you get to that level.
At a min, IMO, you'll want to convert the ecm to handle 29C256 EEPROMS, so that you don't have to mess with the silly plastic holders, and eprom eraser.