I ended up buying a ULE body today from TUNA and a VD helium rail today
my question was regarding if this xvalve kit http://www.tunamart.com/index.php?c=39&p=8
Will work the the rail I picked out.
" If you are going to use the X-Valve in an Emag or RT Pro, KEEP YOUR ON/OFF ASSEMBLY"
That is the part that got me worried, I dont know what exactly the rail I ordered would be classified as