HVAC Foil Duct Tape works well (hardware store for about $10)... but you'll need to polish it for the chrome look. I was going to do that, but several of the mounting points for various things (like A/C vent, etc.) was broken off my original pieces. So, I bought the repop pieces from OMS. They're awesome!
My only complaint would be that the wood grain vinyl glue on the center gauge pod wasn't the best (a few of the edges had already started lifting up). But that wasn't a problem for me, since I was going to replace it with the carbon fiber vinyl anyway. And it's not like it was falling off all over the place - just a corner or two, and with a bit of heat, the whole thing came off in one piece (made a dandy template for the new vinyl, too).
Something I've noticed that applies to scale model building & airbrushing is a couple of products I'd thought of trying. One is called SpazStix (it's the closest to actual chrome spray paint I've ever seen, but have no idea how it would hold-up in an automotive application), and the other is Alclad II lacquer, which is a dead-on accurate chrome paint process - several colors like the Eastwood Chrome stuff... but won't eat plastic). Luxstang had the right idea using something called Bare Metal Foil... which is very much like the HVAC aluminum foil duct tape - but again, it's for scale models, so I have no idea how durable it would be in a real car.