Getrag 5spd behind 6.5 for new project.

[Shopkins]

hey all i'm new to the forum, did a little searching and other than finding out that the getrag 5spd was never in behind the diesels from factory, couldn't find much info. my question is if the getrag i have currently in my 91 gmc sierra with a 5.7 will bolt right up to the 6.5 i'm putting in it. i know the bellhousing will be but am curious if the input shaft is the correct spline/length for the 6.5. Thanks.

-Shaun.