Hi Dan,
I got mine from Castlemain elc and exhaust.
www.castleauto.com.au
Wether they fit or not will depend on what engine/trans you have.
Starter motor's are sometimes in different places and plugs seem to come out on different angles with different years.
I got a set of block huggers but it turned out the did not fit, not enough room for the plugs. Unfortunately I had already had them HPC coated.
So I got a 2nd (definately for AUII 5 ltr engine) set and they did not fit because they slammed into the bar supporting the auto trans and had very little clearance. When I questioned them they said, oh we have only tested them on manuals.
Ended up using the first set and getting my exhaust guy to remake 2 of the pipes and dint some of the others to fit the plugs.
In the end I reckon it would have been cheaper and I woulkd have got a better job if I had just taken it to a performance exhaust specialist and said "make it".
If you do decide to order block huggers. Tell them the exact engine and transmission and tell them you want a full refund if they dont fit.
I reckon I've spent about $3,000 to $4,000 on my exhaust system.
15 years ago I had a Dodge with a 440 big block cost me $1,000 for the complete system, although cats do add to the cost these days, plus I had my whole system (including mufflers) coated for the Cobra