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Thanks for that.... and after reading all these post, input, advise and what not..... I hope everything goes smoothly as well !!
I am sure you will end up fine. Especially since you have family there to look out for you. They will most likely want to install the new FW/PP straight out of the box. Please please please ask or confirm with him that they will MARK OR SCRIBE the stock flywheel's location to the crank BEFORE they take it off. And then please make them KEEP your stock flywheel and pressure plate somewhere, do not throw them away, until after the whole job is complete and you are happy that you have no vibrations. IF they end up going back into it again to chase vibrations, your stock unit will serve as the correct "balanced assembly" for your engine. So knowing the combo's state of balance along with its orientation to the crankshaft will end up being important, IF you have to go chasing vibrations.
You very well may be just fine with installing them out of the box, and good to go with no vibrations. However it is taking a chance, and there are many many instances of having new vibrations after clutch swaps due to this.