I came across a LT1 T56 Transmission from a 96 firebird and it seems like the conversion is more than it's worth. He's asking 800 for it including clutch hydraulic assembly.
I read the input shaft is only 7.25" long and there isn't any bellhousing adaptors. Could the front mid plate and input shaft be swapped? Or is there more necessary to be done?
First, you need to confirm which LT1 t56 you have. I've got the start of a decent write up going over here that'll explain it. Riddler76 also has a good write up as well.
That is for an LS1 T56. I think the LT1 version is different? Quick Draw makes an LS1 T56 bellhousing for small block Mopar, but says it's only good for '98-'02 versions of the transmission. I'd guess the Quick Time model is similar.