Oh my. I would honestly buy a wrecked rig from an auction and just take the frame off of that and part out the rest. Keep the title with you and it will be legal since you own both vehicles.
this will give you an idea.
Toyota Sequoia
I used this website to give me an idea of fitment for my wheels and tires on my sequoia. Of course i put mine on there.
XD 825
Size 20x9 with a +25 offset
Tires 305/55R20 Nitto Ridge Grapplers. They are about 12.4 inches wide and 33.2 inches tall. It will fit stock height with minor rubbing. I modded my front fender liner and removed my front mudflaps. I have no rubbing at all.
My ride is a 2012 Sequoia Platinum. I sold my 80 series a few years back and got this as it's replacement. Not much has been modded besides wheels, tires, and LED lighting. I am going to leave it at the stock height because I don't feel like worrying about airbags and the ground clearance is...
This is my 02 4Runner with light mods. It's a 2wd so I'm not going to get extreme. I have worked on restoring it to good condition. It is about there. This is my go anywhere (on road) vehicle. I will probably get some weathertech floor mats next.