Spare a thought for all those 'one loved' stepnose cars that are fast becoming a rare sight in standard form - at least here in the UK. I can understand the economics of a 'GTA Replica' but it's a shame that there seems to be so few original cars about to remind us all of what they were like back in their day. After all, Alfa struggled to sell GTAs back in period, so it's a bit ironic that so many people want them now!
I find it a shame now that any "GTA" that I see nowadays I immediately have to check the rain gutters to see if it's a real car - then I pay attention to it. It's like Ferrari 250SWBs (& Cobras

) - you assume that it's not real until you do some checks, which is a pity.
I do hope that some people do keep or restore their Stepnose cars to original standard for comparison. They are such a sweet thing to drive in original condition. You can argue about costs of doing so, but in reality any 105 restoration goes beyond economic sense - it's a labour of love and that's how it should be!