The air box needs to be removed, and then the tray - under the hood there are obvious spot welds around the base of the housing - these hold the collecting tray. You could drill the spots (the metal just next to them really) and release the tray for repair. The housing bulge can also be mended from inside if you are still flexible and can bend enough!
When I repaired the bulge, I cut a section out with a mechanical hacksaw blade, repaired it, then welded it with some spots of weld to bridge the saw cut and filled the rest with bondo. Fiddly, but I guess you could get someone to do a few spots of weld without too much cost, or epoxy glues would do as good a job I guess.
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