Well - I found my vac leak - turns out one of the boost control solenoids was plumbed up backwards, bleeding air out from/into the intake manifold.
On the up side, the inlet is pressure tested to 50+psi, and I'm happy with the fact I can actually remove the manifold/supercharger/etc assembly with the engine still in the bay! - yay for service-ability!
Front wheels are back on & machined, no scrape-age!
I've sorted out the pulleys and belt for the belt arrangement -just need to space the supercharger pulley out a little with washer or two!
Intake manifold is ready to go back on - just waiting for some studs to arrive
Will get everything back together for the weekend - do some base tuning, annnnd I've booked some dyno time to get her ramped up and see where everything is at! - not going for big power just yet - will be happy with whatever it makes on 10-15psi to keep things safe for now... it's all about working out how well the new setup is playing ball, when to bypass/engage the supercharger, how much % effort supercharger vs turbo and it's effect on intake temps & exhaust backpressure... etc etc
Once all that stuff is sorted out and I'm happy (plus used to driving the car again lol!) - I'll start winding it up and melting tread.
- sooon!!!