In a past week i have been fitting berg bus 5-speed.. let the pictures tell most of the story.
Because of the big engine, Rancho etc recommended aluminum bushes instead of rubber bushes with berg mounts.
I did cut the torsionbar tube area at right, but thin sheetmetal above needed just little hammer only.
First i thought of putting hard urethane bushes, and then bigger rubbers 75x50 with threaded M12 ends. Problem with midmount rubber brackets that they may hit to 944 alu IRS arms, so i designed lasercut highstrengt steel 15mm/10mm flat offset steel midmount, instead of rectangular tube.
Any comments? To each end it can handle 350kg loads where 75x50 rubbers are.