Yep, two years ago I saw a Mustang with one of those bridge covers and had to have one, too. And Marlon's right, Angela has 'em and it shouldn't matter if it's lefty or right. Pops right on and off and looks retro-vintage cool.
So if you're really into it, you can also get a period-correct strap, the thin tan leather strap with the sheepskin padding (faux) for about $22. Look online for vintage Fender straps and you'll find the right website...or PM me and I'll try and find my old ordering info.