You'd have to define "big gap". There is typically about a 5/8" to 3/4" gap around the sides. There are vinyl 'fillers' that bolt to the fender and bumper for '68. '67's had vinyl fillers too, with the early '67's having metal.
You can look at some close up shots on my photobucket for comparison.
If you want to email some pictures, you can send them to me at vike108@yahoo.com.
Craig
I used to be indecisive. Now I'm not sure. I feel like I am diagonally parked in a parallel universe. 1968 400 convertible (Scarlet) 1976 T/A - 455 LE (No Burt) 1976 T/A New baby, starting full restoration. 1968 350 - 4 speed 'vert - 400 clone (the Beast!) 1968 350 convertible - Wife's car now- 400 clone (Aleutian Blue) (Blue Angel) 2008 Durango - DD 2008 GXP - New one from NH is AWESOME! 2017 Durango Citadel - Modern is nice! HEMI is amazing! 1998 Silverado Z71 - Father-daughter project 1968 400 coupe - R/A clone (Blue Pearl) (sold) 1967 326 convertible - Sold 1980 T/A SE Bandit - Sold