Nice work on cutting a rocker arm down, hope it works out for you.
I am not a slat six guy, in fact I can't recall the last time I saw one in pieces - so let me ask this question...
What is keeping you from adding roller lifters or mushroom flat tappets to the engine to solve the lift vs duration issue?
I understand that sometime there is not enough room to put rollers in some blocks, but a mushroom will usually solve the problem just as well.
Does the slant share a common lifter with other mopar engines?
B.