360 kevco pan hitting drag link and pitman arm with headers no steering

so I installed a 360 into my 70 swinger. It was a 318 car. Installed a kevco pan and I don’t have steering with headers as the idler arm is hitting the header. I did also install 73 duster spindle and disc brakes. But kept my idler, pitman, and drag link. I don’t have enough clearance. Do I need to change to different idler that sits down lower?

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