I'll have to call them and get the particulars. The 007 looks like for gas only so I won't be trying that as I'm on alky. The ones for alky I saw were the P.O., says about 8% increase, Nitro XRP, says "substantial" power increase, and Klotz Nitro, just says maximum power increase. I would think the ones with nitro would require some timing changes if not jetting changes as well. I'll try to call them tomorrow and see what they say. I'll let ya know.
George