you really dont want to do that. Sell your car and buy a V. cheaper and will it retain the value. A platinum with a v swap may not be worth what a stock Platinum is .its not just a bolt in and will take a lot of work many many hours and much $$$$$ I would guess 20-25,000 and you will just wind up with a "close to V" car. If you had an 04-05 with a bad engine an LS swap or an lt4 might make a unique and cool/fast car. If I find one I might even do a manual transmission swap which really does not make sense over the automatic . haha
either requires about the same amount of work and when you get thru the LS would out preform the V unless you do a lot of addons and upgrades to the V. just my 2 cents worth.