http://www.magnumrc.com/ESM-Spitfire...ing_p_310.html
Page 5,,, AND you don't pay by credit card, but by check or money order from a US acct to get the 2% discount. This is an ESM build thread... I lost you when you said Vantex or something. Shipping is a little less and you get a 2% discount. Kelvin from Keleo Creations makes the stacks. He does not have them ready yet, but the ESM Spit Stacks are on the design board.