67 Fastback Engine Bay Measurements

I appreciate all of the information as I am new to Mopar. I went out yesterday to do a prefit on the inner panels. I started with the driver side. I was having trouble getting the indentations made in the panel for the upper control arms to line up with the fender resting on top of the shock tower as it should.
Low and behold I pulled the fender away from the shock tower and everything fell right in place. Only problem is, I can't pull it back on top of the shock tower and line the seams at thr radiator support.
So, I found one of the original panel and measured from the bottom edge up to where the bend is at the top where it starts going over the tower. The original measured 11-5/8". Taking the same measurement on the AMD panel was 10-1/4". 3/8" shorter! They started their bend 3/8" too soon. I really made a mistake here on these panel as I didn't do a firm pre-fit prior to drilling my spot weld holes. Lesson learned as I'm sure I couldn't get my $400.00 back for the pair. OUCH.
You all are probably veterans at knowing the best place to get stuff like this that will actually fit. I will find another manufacturer for any other panels that I need.

Clementine, I checked the quarter panels out on my parts car and both sides are rusted out, sorry.
Everyone have a good Friday.