Thanks Geoff, thats exactly what I am after...
Now do I need to factor in short series vs long series at all (read that on a US post somewhere) for the Gilmer. I suppose that spacers are available anyhow and it will depend on the alignment once its all together.
I will probable brace the Alternator bracket as well as RAY (COB 96- my cars stunt double) chewed his first gilmer belt out due to alternator bracket flex...and sorted this with a brace back to the charge air manifold. see below pic.
I am also considering cutting the pump out of the equation and going for a Moroso electric WP or similar.
Thanks Again for the intel