Came across a Spartan 100. The front fenders are fibreglass. I've never seen this before. Is it unusual? They appear to be original to the truck. Additionally, will these fit a 59 Canadian built GMC of similar size (don't know the model of the GMC but it is around a 2 ton.) Also, were the Canadian GMC's offered with the 348? The Canadian GMC's 6 cyl was the Chev 261 and the other v8's I've seen have been the chev 283. This Spartan has the original 348 4 Bbl, but the resto being done is on the GMC. It would certainly make for a neat truck, but we want to keep The GMC authentic, if not original. Thanks from the newb. Steve