my friend has cheap crap $50 ebay coilovers on his impreza and i must say.. his rides a lot nicer then some of the other cars with more expensive coilovers in them.. im not saying there just as good, but i think SOME of them are close.. his were also all aluminum and my other buddy just bought some and the caps are plastic.. so i guess if it has no plastic in it then you should be fine.. just my $0.02..