no, the repros are good metal made right, but regardless of how you do it, the sheet metal is hard to fit on the TF trucks when you change anything, sometimes even just re-assembling the original parts, they weren't real great from the factory!
repros give you sound material to work with if you can't find excellent originals, but either way, don't expect to just bolt everything down and walk away, refitting the front end always requires patience and some fudging, especially the hood
Bill