Hiya Nepenthes Ceasar-

There is a big N. truncata and a N. truncata x veitchii on Ebay that you may want to check out. These plants will produce the pitchers you want if they are grown in the right conditions.

If you are looking for pitchers that has volume, check out N. raja or N. merrilliana. Both are slow growing but produce huge pitchers.

Good Luck and Good Growing,
E