While your 3 inch may be a bit much I don't necessarily w/ FFR on 1/2 in. The clutch pedal moves quite a bit further than the brake pedal during it's normal operation. So, for me, I always have the clutch higher than the brake. Couple of possibilities to adjust it. One is a firewall adjuster.
https://lmr.com/item/SVE-7553H/1979...04&pkw=&pmt=&gclid=CLHi356CxdECFRKBswodDzIPLQ
Another is a cable w/ adjustment at the bottom end
http://www.cjponyparts.com/adjustab...1/?year=2001&gclid=CKPFmraCxdECFYmFswodQD0LXg
This is a good pic as it illustrates every thing in one. See the big black rubber thing on the end of the cable that is horizontal? That would be replaced by the aluminum adjuster I showed above. As you can see, the opposite end has a threaded end piece.
See the almost half pie shaped aluminum piece. Do you have one of those or do you have the stock plastic piece as seen here at about 1'50"?
If you still have this, the problem is that it automatically takes slack out of the cable so your pedal will always be as high as possible. This video is a great tutorial on how to do the entire swap.
https://lmr.com/item/SVE-7553H/1979...04&pkw=&pmt=&gclid=CLHi356CxdECFRKBswodDzIPLQ
Another is a cable w/ adjustment at the bottom end
http://www.cjponyparts.com/adjustab...1/?year=2001&gclid=CKPFmraCxdECFYmFswodQD0LXg
This is a good pic as it illustrates every thing in one. See the big black rubber thing on the end of the cable that is horizontal? That would be replaced by the aluminum adjuster I showed above. As you can see, the opposite end has a threaded end piece.
See the almost half pie shaped aluminum piece. Do you have one of those or do you have the stock plastic piece as seen here at about 1'50"?