It's becoming a problem.

2nd digit of the Vin is 4 so ifs a genuine Signet (rather than just swapped emblems).

The fender mounted turn signal indicators have to be added - I don't see any indication that they were an option for this year.

It's got a split bench with center armrest in it as well which I believe must have been added if buckets were standard equipment for a 64 Signet.