wasnt to bad fitting the Blitz SBC-iD either. An easy morning, most of which was just faffing round to get in at stuff, feed wires through gromits etc.
Need to look into shortening the 'IN' side of the unit. ATM i have it running from the stock solenoid position down round the front of the engine above the rad then back to the unit by the air filters. Seem to be getting spikes. For example i have ch4 set to 5 Gain, 55 ratio and it holds 0.98 bar perfectly when boosted from low revs, nicely. BUT when you hoof it in 3rd at 5krpm it peaks upto about 1.05+ before settling at 0.98.
Think shortening it will help.
Still need to work out all the functions but it's basicaly the same unit i had in the Supra and R33 Skyline.