I recently had a bad experience with Griffin. Bad customer service would not give me much satisfaction on a bad weld.
I am currently having one made by Afco Racing with no filler cap, 16 AN fittings and a drain built in. All for 255.00 (Griffin wanted 295.00 after the 'break' they gave me.)
It is a two 1" row alum 19 x 26.
I am running a 16" Derale fan with spiral blade. I have a 351W.
Afco is at
http://www.afcoracing.com/ Call and ask for Frank. He is the guy I dealt with.
Roscoe