BB header clearance issue

[70STOVEBOLT]

Has anyone run into a clearance issue using Chevelle headers on their big block with stock suspension? Here is my issue: the passenger side front tube hits the rear nut on the lower control arm shaft. The engine is in the stock location using stock 68-71 big block engine stands and mounts. I have good clearance on the frame rail, starter, everywhere except the control arm. The suspension is all stock, including ride height. I can dimple the tube if I have to, but would rather not if someone has another solution. I thought about putting thick washers under the engine stands on the frame and crossmember, but how much clearance do I need if I do this? I have searched the forum literally for hours and cannot find anything on this particular issue.