I had Nordstrands in a Q5. The bass was reportedly originally built with full Nordstrand electronics , but a PO had installed an Aguilar OBP3. I found it very bright, even harsh, at the time, and it got sold in favor of Lane Poor, Bart, and even EMG equipped Q's. I might feel differently today as my sonic goals have changed some.
My friend has Nordstrands in his Lakland and reports a similar impression, but I know that a lot of folks love their Nordstrands.
I need an FU case, BTW, so I may bid on the one listed on eBay.