Hey, I didn't know you had a blown datto. I checked out your pics, and see they were posted while I was off the net after moving house.

What size holley you running? I've been contemplating upgrading my 32/36, to a 350cfm two barrel holley.
Have you encountered any problems with the "uphill" fuel pipe from the blower? One of my mates has a drawthrough s/c12 on a rear drive 323 wagon, with a 40mm side draught. He is having terrible trouble getting it to start. If your's goes okay set up like that, his should be okay too. It must be a carb problem.
What boost does yours make? Is it an s/c12, or 14? What is your drive ratio?
the eaton blower is probably a better unit than the toyota ones. (s/c12-14) Eaton rotors have like a helix on them. This gives bettter abadetic efficency. (Less heat generated, @ boost than plain old roots blowers) The best positive displacement superchargers are the lysholm screw variety. Blowers are very addictive. Nothing like a good blowjob!!!!! lol.