If I might add a comment...TRINITY SUCKS! I've had them lie to me thru 2 builds. (Told me a 400cc cheetah would make 115HP on gas. It sucked so bad I sent it back and they built me a 472cc 4 mill cheetah to make it up to me....I said dyno it before you send it...92HP?...Wow 72 more cc's and we go from a claimed 115HP down to 92! AND You couldn't keep an O-ring in the motor to save your life! I had to have another builder tear it down and fix all the miss matched parts. Now it runs great at 105 HP. Harry and James can kiss my tailpipe.)Anyway, back to the 2 into 1 debate... I have a best friend with a 2 into 1 setup, but I don't like the Trinity unit. My buddy has the GRAYDON 2 into 1 ( you can find them on ebay if you look) That Graydon is awesome! His bike has 350cc stock cylinders with a backyard builders stage 2 portwork, FMF Fatty pipes, stock cdi with a timming plate and his single 35PWK carb running a 50 pilot jet and a 178 main and he keeps up with another friend with a 421 cub that has just clean up portwork. Guys are going to tell you you need a bigger carb because your trying to feed a motor with just one. DON'T LISTEN! On a 2 carb set up the carb is pulsing. The carbs only flow fuel 1/2 the time. On a well sized 2 into 1 the carb flows non-stop. Picture NASCAR running at a super speedway....You want to see the carb wide open throttle and don't lift. You will be suprised how well a GOOD 2 into 1 can work. In the past others have tried a 2 into 1 with a 38-40 carb and it killed performance because you need the pulse strength thru the carb. I like the GRAYDON design so well I'm having a custom one made to fit the CR250 reed intakes for my Cheetah motor. If you have a stock style cylinder and get a GRAYDON intake, I'll promise you.. you will like it.>>> Trinity sucks! = Fact! >>> 2 into 1's can be awesome = My opinion. There's my 2-cents. Enjoy. I'm out...