Alright peoples, here's the deal: I've been hearing this company Black Diamond Racing, usd to be the ONLY manufacturer of SPI throttle bodies (opening our 50mm up to 60mm). The problem is, they stopped making them apparently. I have contacted them, and numerous people on FocusFanatics about maybe doing a 'group buy' of the minimum number (20) of throttle bodies to see if they'll start making them again (at least for a limited time). I am presently waiting on an e-mail right now, but if you are interested, or have any more information on this topic, please let me know through here. Pricing will be posted ASAP after I hear back from BDR.