18" wheels

72bluNblu said
Which Wilwood kit? Some alter the track width, which will change the backspace you need. Also, some of their kits have a VERY large hub diameter, which will seriously limit wheel options.

This one: Wilwood Disc Brakes - 1976 Plymouth Scamp All - Front Brake Kit No.: 140-15468-DR

It appears to not alter track width, but I don't see any info about the hub diameter.