I'm an aerospace engineer by education and trade, but currently an unemployed one.

Depends on where you're doing your engineering.

FYI, eBay takes a 9% cut of the sale price (which includes the price of the bobblehead as well as shipping), then PayPal takes another 2.9%. So for that $85 plus let's say $7 for shipping ($92 total), you're going to lose $10.95 right off the bat.* That takes it down to $81.05, and the rest of your analysis continues.

Should have pre-bought your replacement, Amazon is showing it for $123.

It's not a PERFECT match, though - the rear wheel well of this 37 Plymouth is covered, while the one on the cover of the comic is open.

The Grand Canyon 'Lopes are under Animals > Mammals > Ungulates. Oddly, the Texas College Steers are there too, but not the Texas Longhorns.