i THINK
www.inlinetube.com sells custom made e brake cables...... also im PRETTY SURE but not 100% postive the 66s use the same 4x4 setup as 67 4x4 trucks..... that would be a drum brake closed knuckle dana 44 with 12 bolt rear...... and rockwell tcase.. (if 1/2)
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My Truck pictures
www.xframeimpala.com
68 4x4 short fleetside 327 CH465 edelbrock intake and carb MSD distributor its the "SHAGROLET"
56 big window short stepside 235 dual 1 brls
64ImpalaSS 327
70 C10 LWB fleetside custom/10 350/TH350
IM me on aol SN= SHAGROLET