Corral classifieds, post a wanted ad for a CCW rotation S trim, you should be able to get one for $600 if you are patient. Only issue I have with modulars and centri blowers is that they need low end which the centris lack. You can do cams for much better off idle power but unless you DIY the cams it's going to cost as much as a PD blower.
But yeah the word is out on the DIY bracket setups and that ppl need just headunits to complete them. Pure Capitalism for you lol. I still like the TT kit. Its a little pricier but you can get a good take off Eaton for $300 which will be enough for the stock block. Then you can upgrade to ANY PD style blower for the Terminator including the TVS stuff and the 3.4L Whipples etc...
2000 Mustang GT Steeda build #48. Bolt ons, suspension, Novi 2000.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.