Glad to see you had the good taste to get an SJ!
One thing at a time:
First, why change the Webber? with the addition of an oversize fuel filter or fuel canister you shouldn't get fuel starvation on steep inclines. If you want an SU manifold, Rhino Rays does one.
The diffs on SJ's should use 90 weight gear oil
Increased ride height can be got at the front either by Ironman Springs available through Moorland 4x4 centre 01566 777200 ask for Bob or check my site before Spring as I hope to be importing some direct for my own Club Members.
Have Fun!
Stephen
Webmaster@
www.Zuks-Un-Ltd-Uk.freeservers.com and Club ZULU
AWDC Clerk of Course Somerset
Happy ZUK owner