here are some pics for starters.but since i already had a ls1 t56 in my car i dont see it been to hard of a conversion.things i notice that are going to be different are shifter location is further ,input shaft were the pilot bearing goes is larger,gonna need a different driveshaft .and gonna need to use castrol syntorg lt oil vs dexron 3

 

Wouldnt it be easier to just bolt on the f-body tailshaft?

 

Doubt it, being that the F body T56 location is further rearward than the thirdgen shift hole, this one is probably going to end up in a better spot.

 

A cost analysis would be helpful.
The hybrid trans. build would be machining + parts.
Divorced torque arm (if applicable) and driveline shortening (instead of just yoke change)
Shifter position. Trans. mount location.
Lots of details. What I'd do wouldn't be necessarily what the OP would do.

 

im gonna be making my own crossmember with a torgue arm mount.so that take cares of that problem.the driveshaft will need to be shorten but i aready have a driveshaft 1350 yokes on both ends.viper yoke will go on one end and the yoke will go on the diff.
http://www.dennysdriveshaft.com/p105...7_splines.html
getting rid of the smaller /weaker u joints
as terring into the trans is a no go unless i really neeed to.trans only has 4000 original miles on it since the car was wrecked

 

but here a pic of the ls1 t56 trans looked like vs the viper trans .

 

Is the front plate the same ?

 

Almost. The slave cylinder holes are different size and location.

 

this thing should have been in a week ago.still waiting on a custom pilot bearing

 

finally got to working on the car.it seems that the shifter location sit quite a bit further than before .

the viper adapter pilot bearing is the shorter one with the larger hole
and the other one is used when using a adapter plate whit a ls1 t56 trans on a sbc/bbc

 

ill just be busting out the tin snips to cut the hole,and gonna start to make my own trans crossmember with torgue arm mount and shorten the driveshaft.

 

Is that hole from T5, or a previous T56 install ?

 

previous ls1\t56 trans that i had in it.with the bbc

 

this is what the adapter plate looks like





metal that i used to make the crossmeber 3/8 thick steel and angle steel

 

just got done with the install ,things i had to do
make my own cross member with torgeu arm provision
shorten the driveshaft . had a new one made using 1350 u jouints all the way through.
pics of what i did.
first couple of pics are of the left, a factory lenght driveshaft and the right a factory ds that i had shorten for the bbc/ls1 t56 and not pictured was the new one for the viper t56 with was even shorter.
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