Is there a difference between Hydra Rev for SBC and Hydra Rev for LT1?

I'm really interested in getting one of these, because I don't want to run a mechanical setup and need to re-lash the valves every week, and I still want to rev to 6500-7000 or so if I keep the car...

 

Oh, also, I heard that lifters are interchangable between LS1 and LT1, is this true? (aka. Will Comp 875 [Comp R] work in either LT1 or LS1?).

Further, if the lifters are exchangable, will the rev kit be exchangable?

It'd be nice to know I can buy this without worry about wasting my money if I end up selling the car and getting an LS1...

 

I hate to do this.. but TTT.. somebody out there has to know the answer..