The "new" 528 has 112 LSA for better manners I guess. I believe the "old " 528 was tighter - something like 108 degrees.

Mike at Muscle Motors spec'ed my cam. It is a fast rate MM lobe, 243 duration, .55" lift, 108 LSA. Timing very similar to the "old" 528 just a bit more lift. 13" vacuum. I consider it choppy but I guess that is subjective. If you want it choppy, better to go the custom cam route with tighter LSA. Also, based on Mike's experience, 108 LSA is best for acceleration with this type of combo. I just know it works well... loads of mid range torque and will hang in to and beyond 6000 RPM if needed... eg. to get that last little bit of straight away before the turn without pulling 5'th gear.