I'm restoring (sports-purpose, not concours) my Coupe. I purchased a nicely restored set of front calipers for a good price which have 3.5 inch spacing. I haven't been able to find a thread that directly deals with a conversion to use struts with 3.5 inch spacing. What all would be involved in making a change to these large calipers and from what model years would I need to source the parts? What is involved beyond the struts themselves to handle a conversion?