different sf unimog bases. rivet brace, lettering and number sizes with different tow well shapes. different shapes behind front wheel with slot filled in on the bottom base.
http://img72.imageshack.us/img72/4517/unimogsf49base1pl0.jpg
http://img380.imageshack.us/img380/7012/unimogsf49base2xn9.jpg
with and without reinforcement behind front fenders.
http://img183.imageshack.us/img183/2918/unimogsf49base3vv4.jpg
http://img183.imageshack.us/img183/6023/unimogsf49base4rz3.jpg