Yeah they are based off taz's kit. I PM red. Sorry I don't check the forum that much, but if you need anything just let me know. The design is pretty easy. Here is what I would have done differently:
Stayed away from diamond plate for the base. (too costly)
Stayed away from topgun II (i run xp 64 and I had to write my own drivers for the system, they work good in mame, especially for 1 player, but two players are iffy at times in PC games like house of dead 2 and sometimes in mame because of the driver interference)
got a bigger harddrive (500gb filled up too fast)
got a bigger monitor (26" seems small when you can easily fit 28" on the cab for only a couple hundred more)
put more fans in it (its slim and energy efficient, but there is no logical place for the ps unless you ad more fans.)
crazy taxi is fun but I wish I had a wheel.