You never know, I ran 162 mains in my 34mm carbs w/ the stock cylinders, but now I have a 4mil stroker and run smaller jets in the 28mm carbs....When I did the dyno testing last year, I had 300 mains in the stock carbs and 330 mains in the ported stock carbs......It doesn't sound right, but you have a totally different motor that doesn't rev as high either, its built on torque not hp......I'm dynoing tomorrow w/ my stock carbs and 4mil stroker as well as some 30mm keihins so I'll know more tomorow...