a body versus e body questions

Hi all,

ive just purchased a 318 from a challenger to re power our 6 cyl 69 dart.
Firstly are the oil pan's the same on an a body and an e body?
Secondly the engine came with brand new headers but i assume they are for the e body. Has anybody tried to fit them into the a body before? and if so was it alot of work to get them to fit? Eventually i would prefer to use the tti's but may as well use these if i can to begin with.

the 225 comes out tomorrow so i look forward to all replys

cheers in advance

shortz