I have a sheet metal semi crossram prototype that was supposed to be done already coming with 8.5" runners and will accept Holley Hi-Ram tops. Once I get it I will let you know. It won't be in production for a while after testing though.

Stock Displacement, pump gas, 5.7L Gen 3 Hemi, early 5.7L heads, 3670lbs with driver, Best time and MPH 11.11@120.9MPH