Re trans mount change:
Okay, perhaps one loose trans mount at a time, with a couple 2x4s side by side (for load distribution) in between the jack and trans case (at the mount pick up section; same loaded section) is a reasonable "at your own judgement and risk" proposition
JFP I completely understand what you can recommend and what you need to stay away from.....
I may just get a support bar for near term airbox work/tinkering......which I know you are a fan of
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. Do you have a good Boxster specific one you use or think highly of?