Frame differences Z500?

I have the setup like the second picture!! With the triangle. Which can i buy then?

Cant really remember what the Raask guy said atm and i have the email on my work mail. Think he said like the Kz550 in Sweden will fit? Or j500.

I think the older style, which is FK-2 is used on the Z 400J - 4 cyl to '81.
omarsdtr.com/FK2.JPG

I think the older style, which is FK-4 is used on the Z 500/550 to '81.
omarsdtr.com/FK4.JPG

I think the one you want is the FK-8 which is used on the Z 400J and 550 '82-on, and the GPZ 550 to '81. omarsdtr.com/FK8.JPG
Notice it uses the two mounting bolts from the stock, aluminum, rear peg mounts.

Hmm think you may be right. For safety sake ill post both sides on my bike. Not the best pictures, but its what i have atm. Dosent really look like im gonna get my feet enough back that it will make any difference tho. Think he said 21cm.