Quite the opposite, with no other changes to the valve train, stroke or bore, the signal would be so week as to caue a big fat stumble from being lean, unles he jacked the acc pumps. Ita amazing how many 4 bbls i correct just by disconnecting the seconaries.
If it's the cast iron Vair box.. I don't think you can reverse that one..Just nmake it work.. Know 0, nadda, nothing about Jag carbs..Thats the idea of this class, Just use what ya got....
I just reversed a cast iron box,same way you reverse an aluminum one. 2ea 1 bbl holleys from an early slant 6 will work great.