I recently purchased a 79 fj40. The po installed hfs 4” lift springs with 4” hfs shackles. He also reversed the front springs. It had no shocks. CCOT no longer sells the shocks that went with this package. I want to install Bilstein 5100 series shocks but do not know which ones to get. Does anyone have a simular setup that can provide Bilstein model numbers and sizes? Thanks