68 C-30 wrecker questions

[qksilver]

Just bought a 68 wrecker close to home , cheap, complete and runs.
I checked out the spid and it had dual wheel conversion on it.
It has roof mounted clearance lights but they aren't hockey puck style, factory.
I was on the road as soon as the guy called me. I had been trying to get ahold of him since yesterday.
Of course I got there after dark and it was raining hard.
Bought it any way, just wondering about 68 C-30's in general , suggestions, advice
like can I use a complete 72 3/4 disc set up and just get dual rear wheel front rotors?
what differences from the 1/2 , 3/4 trucks to a 1-Ton.
How do i become a member of the 1_ton club?
LOL
Thanks,
Steve