Did you consider this one instead? It lists it as 0.3" less overall thickness.It took a bit of work to squeeze it in there but it works great, 69 Chargers have almost no room in there. I asked around on here and it seemed like around 3,000 cfm was the general consensus, it works.
View attachment 1131263
https://www.summitracing.com/parts/SPU-IX-30102130?rrec=true