Ace Exhaust Systems

[prototypefan]

I'm looking for information on exhaust systems for Ace's and am somewhat confused, what is the correct system for each car?
   
   AC engined car:
   Header color, white/grey/black
   Muffler
   Tailpipes, natural steel? Do the angled cuts in the pipes face the ground or the side?
   
   Are the Bristol engined cars the same?
   I've seen the angled cuts on the tailpipes facing both directions on Bristol cars, which is correct?
   BEX1210 won the preservation class at Pebble Beach in 09 and it had a white exhaust header.
   
   Finally, how are the Ruddspeed cars configured?
   
   Thanks in advance!