I sent my whole motor out to Eric and he turned it into 155 (bore and stroked)with low to mid porting on race gas. Brass-40PJ 440MJ. The only thing I don't like about the motor mod is running high price race gas, But I wanted the most torque and HP I could get. I had 3 KTM 200's and I wanted to try something different so I bought a slightly used 06 yz 125. When I bought the yz it had a 144 kit. I rode it with the 144 kit a few times, but it still was lacking compared to my ktm200's. That's why I had E.Gorr make it into a 155. The 155 has a lot more power everywhere compared to the 144 , but it still is lacking a little on the bottom compared to the ktm200.
I am in central Iowa and I'm curtly laid up from a little knee surgery this past wednesday.