Yeah, I've been over to ls1tech.com alreadygood site. And yes it is an LT1 (5.3) not LS1 but still a good upgrade compared to the original 289.
As for more room, well the clearance around the diff is minimal, probably have to modify the oil pan the way you did. The intake is too tall (can be fixed with $$$ and a lower profile intake or a hood with a scoop, the exhaust manifolds dump right onto the frame rails, other than that it is a perfect fit.
It's been a slow start been working on it a couple of months, but really only 6-8 days. Only get to work on it on weekends. Just got my Atlas II today. Still have to get the new front axle (Dana 44). I will probably have to uninstall it from it's current Bronco as the owner is dragging his feet. He has had a perfectly good D60 sitting there for months and just won't find the time to do the swap.
Time to start putting it back together this Saturday!!
The motor came out of a Suburban. The Bronco weighs 2000 pounds less. I am anxious to see how the performance is!!
Steve G