I would like to join initial D party but i find the link of calculating the IGT is not working. Where can i download it. Thanks.

I think site will work in couple days. but for now you can use this https://web.archive.org/web/20171115164932/grun1.com/utils/timeCalc.html or this http://web.archive.org/web/20171115164932/grun1.com/utils/timeCalc.html

Thanks for the help :D