I got this figured out now.
Use Maxima VQ30DE Flexplate timing ring with 350Z STOCK Flywheel.
They are both welded and must be grinded off and welded again. They are direct fit.
Use Maxima VQ30DE Flywheel timing ring with 350Z AFTER MARKET JWT Flywheel. They are both bolted on and the Maxima ring has to be drilled with new holes.
Below are the pics of 350Z STOCK flywheel and Maxima Flexplate.



