I just took the time to read back about 3-4 pages and I'm really impressed about what I'm reading about this engine. The original 12TR I ran last year was nearly perfect for our local track. Perfect on the infield, slightly under powered on the straight.
I think this new R-Spec would make an excellent replacement for the unreliable Sirio I've been running up to this point.
I'll likely be ordering me one soon!