A buddy of mine has a 68 Dart with a Torqstorm and efi he just put together. He had it running for 3 weeks, then drove from Virginia to Missouri to race, won 2 rsces, and drove home with no issues. Car ran 13:20s.

He is on www.slantsix.org as Dart270. He's documented it well.

The Slant bottom end really doesn't need much. They're pretty tough to start with. You can easily bore them +.100", I know of some that have gone +.190" after sonic checking.

The bad part is the head sucks. But with a blower that isn't such a big issue.