what are the best carb set ups for low to mid end power? lectron 34mm's?
also who should i have port my engine and who offers the best big bore/stroker kit?
is it worth it to switch to toomey t5 pipes if i have fmf fatty headers and powercore II silencers.

 

carbs-for low end i would go smaller than 34s unless your motor actually needs them to run right. People might disagree with me but drag racing the bigger carbs only seemed pull hard on top end so we went back to 28mm. Lectrons are great carbs so i would stick with them, maybe 30mm or 32mm
BB/Stroker-it seems trinity are the main people with "kits" but most builders can port to match stroke.
Porting-personal preference, i really only know drag builders off the top of my head so cant really help you
pipes-depends on what you're doin. toomey is a great all around pipe, but fmf is better on low-mid but doesn't pull as hard on top

 

Bad has good points (no pun intended) Smaller carbs will give a lot more bottom end. If you plan on doing other mods in the future, I would personally go with the 34's and then buy a +4 degree key to help low end even further. You can always rechamber the head or get a cool head, and the list just goes on and on and on. The Toomey T-5's are the best all around pipe IMO. I ran a 4.87 on them and I can go ride around no problem all day in the dunes.