Syncro1 has an 87 style lower control arm (2 piece at the ball joint).However it shouldn't have that type of front end for a 90.
 Sean G87 Syncro TT, custom camper, 2.5 Subaru
      From: Dan N <dn92610@GMAIL.COM>
 To: vanagon@GERRY.VANAGON.COM 
 Sent: Tuesday, August 22, 2017 9:27 AM
 Subject: Difference between 2 Syncro
   
hi all,

I'd like your opinion(s) in this subject I posted on Samba... since on this
list I can't attach pictures... here is the link...

https://www.thesamba.com/vw/forum/viewtopic.php?t=685188

thanks

dan