JZX100 Chaser manual rear subframe removal

[KIPH8N]

Hi guys,

I recently imported a jzx100 manual chaser.

So when it got here i saw that the diff bush's are cracked. I'm thinking of removing the rear subframe myself (home garage) and changing the diff bush's.

I have done a bit of research and found out that i can replace them with solid weld bush's/ KTS solid bush.

Would i need to buy rubber bush with the solid bush or can i use just the solid bush by itself.

Are there anything else i should change while the subframe it out?

Car is still not complied or certed. Would these solid bush pass cert and compliance?