Personally, I would retain the vvt. The more aggressive of the vvt cams available from comp cams is actually very comparable to the LS9 cam.
LSA: 198/216 .480/.480
LS9: 211/230 .562/.558
Comp vvt cam: 218/222 .566/.578
All with a ~114 split.
I think the benefits of the vvt would be worth keeping.
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DISCLAIMER: I don't know $#!+...
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