No im speaking about on msa. You can buy either springs for a 9/74-78 280z or springs for a 70-8/74 240z. I have a 8/74 260z. Its has a full 280z r200 rear end in it recently installed. What combination of struts and springs should i purchase? I have figured that because of the extra weight that i should buy both 280z struts and springs. Will this fit? Also, what is the difference between the arizona z car springs and struts vs the, say, springs and struts msa sells. Tokico illumina and eibach springs vs an arizona z car set up. Which provides better handling? Differences? Similarities?