Viking engine requires a header tank. Viking offers a 3.75 gal. spun aluminum cylindrical tank with six 3/8" NPT to 5/16" id barbed hose fittings. Found similar tanks (different fittings) on E-bay. Contacted the manufacturer (BAM Manufacturing - dune buggy and hot-rod tanks) and asked for a quote to my specifications (see sketch). This tank is slightly larger than the Viking tank (~5.1 gal) but will fit in the same locaton. I was quoted $185 for the tank including the 6 fittings, 2 circular steel band mounting straps, and shipping (Witchita, KS). I included a pix of ther Viking tanlk with the drawing. BAM informed me that the Viking tanks are actually spun and welded by BAM.
