You could go with the FCR 40 mm from service honda which is about $350, but the 41 will run you about twice that much. The 40 is actually newer than the 41 and 39, with a little better technology behind it.

 

The shipping for the engine was 129.00. Minus 15 because i had to buy a box there, so 115.00. Yoshi said they have a week turn around time. Meaning that it will take them a week to build and then send it. How much power will i loose if go with a 40 instead of a 41mm.

 

LOL, no power loss that you would feel by the seat of your pants. People always fail to remember that tuning is 2X as imortant as anything else...