Did you have to drill the end of the crack, and/or groove out the crack so more of the repair material "penetrated" deeper? Looks like a pretty nice job. I have never heard of the Corvette panel adhesive...
I grooved the crack pretty heavily with a utillity knife and feathered the edges pretty good. Once I take the header panel off the car I am going to repeat the process on the bottom side.
I've used the panel adhesive before when I used to repair corvettes it was used in panel replacement in Fiberglas you glue it on with the adhesive also use it in the seams
I have couple of Vettes......have done repairs like this.....you are doing it just right. I saw no mention of doing the backside earlier but just read you are doing it......nice work there and doing it right! Keep us updated.
I grooved the crack pretty heavily with a utillity knife and feathered the edges pretty good. Once I take the header panel off the car I am going to repeat the process on the bottom side.
personally if it was me on the under side for support I would grind 2-3" on both sides of the crack lay fiberglass mat and resin for strength and I only say this because I've work professionally glassing vettes the adhesive will hold but on the underside the mat and fiberglass will be a stronger repair it will give you holding strength on both sides of the crack instead of counting on the adhesive to hold on the cracked area (gives you more of a footprint ) your repair will work ,but you will have to be careful a v'd crack is not much of a area to give the adhesive the ability to have a strong grip on the repair.