I have a Greddy Electronic Boost Controller Type S F/S with a boost gauge. It's on eBay right now with a starting bid of $295. Actual value of both items are $440. If somebody here buys it locally I can deliver it or meet you half way depending on where you are. It is item #150327996253. The link is below.

eBay Motors: greddy profec type s electronic boost controller (item 150327996253 end time Feb-27-09 03:39:38 PST)