Hey, are there any other MaK heads here? If you want the latest offerings, you should go to Japanese mail order stores for these kits, as the major US distributors have a hard time getting their hands on them. Most of the Mak modelers I know, order from either Rainbow 10 http://www.rainbowten.co.jp/english/index.html or HLJ, www.hlj.com. The best bet is to pre-order what you can, as the production runs of the resin Model Kasten kits is limited and only stay on the shelves because of the price $50-$80 for a few pieces or resin plus some IM pieces. The Nitto IM kits are reasonable $12-$ 35 depending on the kit. Buy in bulk from Japan and even with EMS shipping, you come out way ahead if you bought the same stuff at your LHS.
I have a website of my MaK 3000. former SF3D, biulds if you wish to have a look.
Enjoy.