Since 4Crawler is selling them, any reservations I have about them are muted. Not going for lift, mostly just decranking the arms and getting a niiiiiice soft ride.
 For what it's worth, I fired up Shadowfax and it runs very well, doing the Motoman break-in (only, not revving it overmuch, and did break in the cam at 2K RPM for 15 minutes or so). Seems stronger every errand. Now I need to fabricate a 2.25" catback to take advantage of the O/S valves. Got the parts. Only need the time.
The only odd thing is an erratic idle, as if the motor is not quite sure whether it's cold or not. Sometimes 1200rpm, sometimes 500. ??? But it settles right down once warm. Thought it was the TPS but that checked out, and adjusted within spec. Mebbe the AFM? Mebbe a temp sensor? Oh well, minor.
This would be my first (automotive) complete engine overhaul.