going by nenguns and greenlines prices which are all in yen, the prices are differrent every day due to the exchange rate and also if you ask for a quote the price will be different again so 1411 trust kit means nothing, i would asume he is talking about the trust V-SPL which is 600x240x76 which is slightly smaller than the hks type s being 600x301x65 i just went for the bigger one and you cant usually go wrong with hks
its all preference and what you can afford