I didn't think the VC Sports dress cowl fuel tank could fit on the Contessa/Corvette base casting as my measurements suggested the VC Sports tank wouldn't clear the high arch shute. I wanted to use a black 78 Powerplus top and tank on a good 80's Corvette/Corsair base of mine. Your pics say I can.
I needlessly cut the rear of my only black 78 PowerPlus top to fit on my VC 160 bitsa which is worn out in parts. I wanted to move that engine onto the green Corvette base with the proper tank bit thought I couldn't. I no longer have the original tank that comes with the cover!

Love the pic of the brand new series two SPFC Corvette!

Ahh, if only victa had kept producing the thumblatch catcher series, they would be in better shape today!