Hi, I also have a Sunburst Probe Precision Bass and its my absolute favourite. The pickup system is the most powerful I have ever heard for a non-active bass and although I have it setup with really cheap 50 to 100 strings its a joy to play with its lowish action and absence of buzz on any string in any position.
From what I understand, it appears to be an import from New Zealand and was originally priced at around $199 but I paid just £135 for it in a sale dropped from £156. I have not changed any parts of it but may treat it to a Badass bridge/tailpiece in the future.
The body is of basswood and here is a link to a red model, http://www.ddmusic.co.nz/products/91