what pipes should i grab 4 a 240

It depends on what kind of riding you do but I would suggest one of the right hand pipes like a factory 7 (or any of the other pipes made by power pros) or a dynoport high volume. I wouldn't suggest the toomey for the big bore. Its an awesome pipe for a stock motor but I've never heard of anyone using one for a big bore.
 
I just went from a Toomey on my 240 to a Power pros Right hand pipe, i have not rode it much but the little that i did it made a noticeable difference.
 
Toomey is EXCELLENT for blasters but not the best for a 240 kit. For a 240 kit I recommend a F7, Dynoport, Trinity, Vitos Fat Bastard, or a LRD.
 
B1 are just the same as the banshee's t6's...both are the best for a stock motor but once you get to modding you MUST upgrade them...they wernt designed to be with a 240
 
the vitos fat bastard is the only pipe mentioned that was designed for a 240, the rest may work but the fat bastard has the largest volume and best mid and top end
 
kennedy has been using the vito's pipe lately and getting some pretty good numbers out of it. if you check out the "50hp pump gas blaster" post i belive that was with a fat basterd but if you planning on doing some porting on your 240 kit i would leave the pipe choice to the engine builder cause they will know whats going to work best with the porting