Well You never know when your going to need other parts... One Fender bender and you say to yourself.... "Dam Im glad I have these parts"...lol

 

well i dont know very well the after 1970 "B" bodys or "E" bodys, engines. iam an old early 60-68 Chryslers with 413-440s guy. my big Q is with the 70 to 75 "B"-"E" bodys did they mostly have only 400 engine but not 383?

 

Correct. The 400 replaced the 383 in 1972. Although it is just an over bored 383.