I'm not certain what the issue is here. The allowable shape of the suspension tubes was fought out decades ago. If it was symmetrical then the shape was not an issue. But you could not make covers for suspension components.
I doubt that anyone would say anything about carbon fiber brake line protective covers either. Maybe in this case, Jon needs to pass a brake line through the wood and all will be good.
Marty; the suspended weight is probably closer to 185# at each front corner. 40# would be a guess at the un-sprung weight. My point was that the load to design around is closer to 700# than 300#.