there is a backspacing problem, but one that can be taken care of .... at a cost !
Places like H&R Springs (http://www.hrsprings.com/) have the proper and extremely
well made spacers .... about $200/pair !!!!
I was going to mount a set of 4 1999 Cobra 17" x 8" rims on my 1968 Calif. Special/GT until
I found out about the cost of the spacers. Instead I worked a deal on the Cobra Rims
for 4 new Yokohama AVS db's (225/55 -16 and 245/50-16) on 4 new 16" x 8" Shelby ten
Should be all ready by next week, will post pics if interested ....