Neat concept, you can tell it's the fit-up stage. This wouldn't fly in most states without relocating the license plate.
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I currently own 4 T4R 4th Gen
#1) 2003 Sport V8 2WD purchased new, totaled @ 175,000.
#2) 2003 SR5 V8 2WD running w/engine from #1(Son#3 is Driving)
#3) 2003 Sport V8 4WD
#4) 2004 Sport V8 Supercharged 4WD
Not just a tire carrier. It's a custom swing-arm holding the spare, hi-lift, gas and water jerry cans. I have something similar with dual swing-arms including a relocated license plate.