Just curious.. what brand adapter are you going with? I've been googling it, and there are quite a few.. I've never dealt with adapters before so it'd be a big help to see what others such as yourself are using.. And I can't find any that are all-trac specific.. I assume any adapter that fits a '90-93 celica will fit, since the bolt pattern & lug size are the same?
Also, some adapters (and wheel spacers) claim to be hub centric.. this means it has a circular protrusion from the center that fits right into the center of your hub correct? Is this something that helps with stability, or simply ease of fitment?
Thanks!