67 Cuda Dash Installation Question

I removed the dash on my 67 Barracuda fastback about 4 years ago during restoration. When re-installing the dash panel a couple of days ago, I noticed the dash frame-to-cowl interface left a gap of about 1/8" (see pictures below) across the joint. Question: is this the correct interface or should the gap be filled with some sort of sealer or weatherstrip?