I did a job similar to this a few months back, but i did a little more of a custom job, and have embossed the holden logo into the roof. Anyone who does it, i can offer a few tips. Make sure you have plently of time and patience and it is much easier as a two man job. Get two people to apply the glue and then two people to evenly spread the fabric.
I used i think it was Selleys kwik bond heat resistant adhesive comes in cans costs about 20 bucks for a litre, should only need a litre at most. Its held my embossing on for 5 months now (the embossing is done with thick cardboard)
Just remember dont slop it on, if theres to much excess the glue will come through the fabric as i learnt on my first attempt at this job.