Header Clearance. Need Advice!

[CJM72]

Hello Friends. Been picking away at my swap and the other night I mounted my Doug Thorley headers (Thy‑324y‑c) to my LQ9/4l65e combo in my 1972 Blazer. Everything bolted up nice and easy.

After a quick final inspection, I realized my drivers side header is basically touching the firewall where it kicks down. It bolted up easily, but I barely can fit a piece of paper in there!

So question is...how do I get some clearance in there short of beating on the firewall? I may try loosening up everthing on my Dirty Dingo mounts to see if I can 'clock' the motor a bit, but it seems like the soft motor mounts will just sink back to there normal level. Could collapsed body mounts be the problem?

Spacing seems pretty even on both front mounts and it appears the previous owner has 2 shims on both sides. Anybody have a measuremnent between the rocker box or floor and their mount with fresh body mounts? I ordered up a set of new mounts from Wes.

Headers are ceramic coated, but not sure I want them touch the fire wall like that!