Rick,
If ypu are trying to put a t5 in a deco truck, you will need an adapter, or the bellhousing that Buffalo Steve has modified to work with the stock pedals. The bellhosuing is actually a 48-53 bellhousing that has had a plate welded to it for the brake and clutch pedals. The adapter plate is used when using the original bellhousing on deco and prewar trucks. There is a Tech tip page, written by John Sandoval, which shows one conversion. Cavebull also did another conversion. Both are well doccumented on this site with photos.
John