tlewis95
I drive planes
Waco Classic (the makers of the new YMF-5 Waco's) came out and posted a picture of the first model that had EFIS. Pretty cool stuff, but looked strange in the Waco - in a neat way. I will try to find a picture and post here. I believe that since they started building the YMF-5 that a full instrument capability has always been an option. I am not sure that I would be flying hard IFR in a Waco, but it would be cool to shoot an approach to minimums in an open cockpit biplane.
I think that the one that AOPA restored a few years ago was full IFR with a Garmin 530 in it, and they actually did instrument flying with it!