CRX del sol

Domstrufen Hi Ihrs, I have lowered my CRX EH6. But now would like to install Domstrufen still for safety. Who has experience that I should take and which by no means? And can I build one up in the back and still sink my roof (no e-roof)? And where can I get a good strut (e.g. with ABE) for the back down (between the rear axle)?