3.5' array on 4' array pedestal? (1944C/NT)

I have a cracked 4' array (1944C/NT - 6 kw) that needs replacing and own a 3.5' array and pedestal. Can I simply replace the 4' array w/ the 3.5' array? I know the performance will be a little less.

Officially that combo hasn't been FCC approved, so the answer is No.