I have manifolds in stock if you want to really wake up that 1.3. I'm on my second short run. These are high quality, well thought out units. One piece intake and separate cooling manifold. No maze of hoses.
$







Samurai Products from Gecko Cycles  

this looks pretty sweet. have you dyno'd to see what kind of improvements it makes?  

No real numbers, It sounded like I hit a dog before the carbs and then 31' burnouts. I had a great running stock carb on it before. It would top out at 78 mph on the GPS. Now it tops out at 89 in 5th. I'm at 5000 ft. It is a hand full to control. What it really does is it goes almost 75 in third gear. I have new 31x10.50 Trxus at 20 psi. 5.14 T Case and stock 3rds with Lock Right in rear. 177 lbs compression even all around.
Here is the Dyno. picts. LOL.


 

I've decided to pullout of making these anymore due to the lack of interest from serious buyers. Tire kickers just taking up too much of my time for the amount of real orders. Thanks to the 2 guys that did order some from this site! You will love them when you get them dialed in. Not to mention the between 4 and 10 MPG increase. Which was important to me being I am driving 100/day on average.

The Sammy world needs some China guys to make this and supply new carbs with them.  

I was gonna say, you actually got an increase in fuel economy? That's awesome!