T 56 swap question

Found a pic of a Challenger TR6060 and the input shaft is splined twice what a Viper input is.
http://www.speedysgarage.net/challe...de/images/challenger_mcleod_update_01_web.jpg

Thanks for the info, looked all over for a proper pic of a tr6060 input shaft, guess I suck at the internet since I didn't find it. :-)