Converting flatbed trailer

[Radiowave Trucking]

First off, sorry if this is posted under the wrong area but wasn't sure where else to post this question,

Contemplating converting my current flatbed into a box trailer but would like some opinions on using metal or styrene to do this?

Thanks in advance!

[fhhhstix]

I would use use styrene but that is just my opinion and the fact that I can get styrene in 4ftX8ft sheets.

Travis