I ran into that issue when building the Tom Daniel's Red Baron hot rod. So many of the chromed parts have to be assembled, leaving seams, and of course, there were the sprue gates to deal with. So I stripped the chromed sprues using SuperClean (an automotive de-greaser, formerly made by Castrol. Eight bucks a gallon at Walmart). Then I used Krylon chrome paint on some of the parts, Model Master gloss aluminum on some others, after I had assembled parts in the usual way (like the fuel tank, for example, I glued the two halves together, sanded the seams, then painted it). You certainly can use Alclad or other metalizers, too, but the thing was to decide from the start not to save the kit chroming, but to replace it.