stainless steel vs aluminized steel, mandrel bent vs regular bent

if your wallet can afford it go with the tti system for the manifolds back. if you cannot take the expense, then the aluminized setup will work just fine. the difference? well i had a standard setup with 2 1/4 in. pipe w/ no cross over on the demon. i went with the x pipe 2 1/2 in. tti manifolds back setup. the difference was like night and day...really. flowed alot smoother and picked up alot on the bottom end. if i had to do it all over again i would not hesitate to go with the tti setup again. good aluminized will hold up fine. stainless isn't necessary imho but that is me. stainless can split from constant heat and cold expansion and contractions. happened to my car so i know....