So my buddy and I successfully installed the toytec 3" lift on a platinum. Disclaimer the only thing you will get is the small air ride manual light that flashes. (its not that bad Ill probably just take out the led or put a photo over it. The reason
@Yotadriver706 didnt have any lights on his dash was because he is still using his stock air ride with his lift. We are not...
How we switch from air to coils. Is the bags will need to come out along with the bags LCA.
The only OEM parts you need to get is the spring insulator and spring LCA from an SR5 or Limited. To save a few bucks we ended up going to Rockauto for the aftermarket LCA and they work just fine. Its what ~$80 vs ~$250 OEM a part.
If you plan on keeping the stock height with OEM coils then it would probably be best to try to get the matching sr5/limited struts. You may be able to get away with the electronic control platinum struts but I never tested it out. I think it just adjusted dampening.
Then just bring it to a good alignment place and you should be good. It really isn't that hard to do the conversion from air to coils. There's just not enough information in the forums about it. If your scared or bother by the thought of the air ride manual light flashing on your dash then simply don't do it. Do this at your own discretion. anyways I hope this helps you or anyone else reading this.