A Big "hump"from CRS is not that expensive and fits like a glove...
My question is how does the floorshift fit for comfort with a bench seat??? cause you dont want want a 4'long shifter with a 6'throw
Dellow automotive is another bunch to check for conversion kits.

I had some info from  castlemaine Rod shop that said somthing like the only time you need to modify the tunnel is if you use a turbo 400 as it is a physically large transmission.....but saying that Im using a 350 turbo and put in a bigger tunel anyway just to be safe castlemaine rodshop can supply and the fit is real good or Ive heard that a HQ tunnel will go in easy too...but I dont know anyone who has tried it.

 ;Dhey people
new DBA Rotors at http://www.discpads.com  cheapest place in sydney order over the net and pick up at parramatta.... I know its not what u r talking about but ya gotta have a look at the site then compare the prices elsewhere . I sound like an advertisment dont I ??

DBA make leyland P76 rotors, check out http://www.discpads.com     you can order them over the internet and pick them up at Parramatta, you can't buy DBA stuff any cheeper than from here on line(the only way to order) a friend of mine is a mechanic and he won't install new DBA rotors if they come from there, its as cheep as if not cheeper than trade price.

You can get standard, slotted or slotted and drilled from here.
P76 is the same pattern as Ford Falcon so if you use a ford 9" diff keep the front the same.
Rod hadfield (castlemain Rod Shop) has adaptors for the bearings to fit the HR stubs or you can get a set of his lowered stubs and the adaptors fit them too.  

  I have a front end (complete) and a diff out of a car that only travelled 50,000 miles .....cheap to good home.I also have some body  mouldings and a few doors . Im in the Penrith area...if interested call me on 0403172873 between 8am and 7pm