I guess its good if you don't mind melting a motor. I ran that stack for 5600 mi on a Schied motor that I melted 4 pistons on and cracked a ported and worked over head in 4 spots. Too much timing is a bad thing. I was only seeing 1250 degree EGT's also with more mods that what your talking. Too much timing cools egt's but makes hotter piston temps. Trust me on that one.
I believe on a 03 J/A does pressure so adding a pressure box won't help. If you have the TD already ditch the edge and get a TST with adjustable timing. If like the edge and don't have the TD get a diablo pradator alot of people seem to like it stacked with J/A
Their is way to much timing/duration with the two together not only would the motor sound like theirs a bunch of marbles in your cylinders bouncing around but temps would be through the roof. Like robert stated in previous post stack a pressure box with either one of them and be done with it or get a smarty and wait for the revo and have all in one.
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