Advice On The Right Slicks To Put On My Car

[Clarke AV]

I am currently looking at purchasing some Mickey Thompson racing slicks. size 26 x 8.5 x 15. Now, will they work on a 7" rim, which I think most standard Ford rims are in width? Is there much difference between putting them on alloy or steel? Or what size should I put on a stationwagon that develops 150kW at the wheels - only on a good day? I've just purchased a LSD centre and I would also like some advice on what ratio before I get it installed. The car is a work car so I don't want to go too high with today's fuel costs and I basically love going to the track, but it's once every 6 months only. And I have absolute fun, even though I don't have a fast car. But I would like to at least wipe 1 second off my current time, hence the slicks, and I don't want to buy the wrong thing.
Any other advice would be most welcome. I've attached 2 links below.
Yes that one was a bad reaction time, I normally average half a second.

http://members.optusnet.com.au/~bccl...08/233-264.avi
http://members.optusnet.com.au/~bccl...8/233-burn.avi

One last question: how much of a burn-out warm-up is required and how many runs would I get out of them? Thank you very much for reading my post.