74 Duster transplant exhaust

I have a 74 Duster that has a 1996 transplanted 318 Magnum motor in it where a /6 used to reside. It will be a daily driver with a mildly warmed up 318. Not sure where to go with the exhaust system. The stock ( 96 Dakota ) cast iron exhaust manifolds will not clear the P/S gear box. Headers would be preferred as long as they don't go below the steering linkage ( daily driver ) and will clear the stock P/S gear box. Cast iron exhaust manifolds would be ok also if I could find a set that fit the magnum heads and also clear the P/S gear box. Shorty headers would also be acceptable. Any suggestions would be greatly appreciated. John