Re: Deciding between vintage and "vintagized" Home › Forum › Ask A Member › Deciding between vintage and "vintagized" › Re: Deciding between vintage and "vintagized" frankrUS Member - 1 Year (includes $3 online payment fee)Replies: 6715Topics: 51 August 23, 2018 at 12:28 am #81614 Actually, I think you can go as much as 100hp with that bolt pattern. But I was really thinking like 75-80 or so, keeping with similar carb and ignition system.