Transformers for tesla use?

Hi, I am back on "the list" after an absence of 4 months due to my moving   
house from Hamilton, New Zealand to Adelaide, Australia.  Its great to be   
back and I see now that Terry is the list Moderator, congrats to you   
Terry, I know you will do a good job.

Anyway, thought I would ask a question to start with:

I have found a couple of electronic surplus junk shops and at one the   
proprietor has a number of large transformers rated at 5kva and 2000v   
output, are these any good for tesla use (eg do you think I can rewire   
them?  They are flattish and 20" x 12" in size.  Also there is a three   
phase variac driven by a small DC motor, it is unusual to me in that the   
coils are mounted on their sides , one atop each other with the contact   
bar moving along all three coils as the motor turns.  Im not sure what   
the rating is but was wondering whether i should be able to rewire the   
connections to make it a single phase variac with 3 times the current   

Also If there is someone else out of the 500 or so people on 'the list'   
who might be from this corner of the world, I am wanting to find out   
where I may get supplies for making my HDPE caps here in Adelaide and   
also about getting a pole transformer here?

Anyway just a few thoughts.

Matthew Mills
EMAIL: matthew.mills-at-santos-dot-com.au
Phone (08) 8364 0249