Been driving myself crazy trying to decide on a can swap for my 340....not going with anything outrageous just thought it'd be time for a little upgrade...I am looking for something "plug and play" and was looking at the Comp xe268h..but with the "kit" you can purchase through jegs/summit comps site says head machining is necessary...any advice or other can suggestions? Stock spec 70 340..auto...rear gears swap between 323 and 391.... Stock exhaust manifolds and a six pack on top...tires are 27" tall but will be running some smaller diameter drag radials for strip time...no power brakes etc so vacuum is not a huge concern..car has a 2500 stall converter also....sorry to bug everyone with another can choice thread but I am fed up enough with it all I was about ready to just buy the MP 488 cam