You can't use the E-Rod because they are only good for pre-OBD2 vehicles. I agree with everyone that you should get the idea of an LT1 out of your head but I wouldn't write off doing a LS based GM engine swap in CA. (Disclaimer: Don't think I'm making it sound cheap or easy.) The swap isn't that bad. You need to run the factory GM cats really close to their stock location, EGR (if the engine had it), and the evap system which, depending on generation, may include a fuel tank pressure sensor and as far as emissions components I think that's it. The biggest issue (which hopefully I can be a part in changing) is the fact that when they plug in at the ref they are going to see the ECM programming is "adjusted", for the lack of better words, right now because the VATS is deleted. This is just anti-theft and I apologize if this has been gone over in this thread before, but, has zero affect on emissions output. I have not done a smog legal swap in an 80 series yet but I've done a few in other vehicles, both OBD1 and OBD2. Once I get caught up on orders and stock for the shop I will be embarking on a 5.3 and 6L80 swap in my 94 FZJ80. I will document the whole deal and I have about 100 questions for the smog ref this go around (he loves me because I make him think!) that I will gladly share the answers too.
I just had to look up specs on the LT1. I was thinking 96 was the last year anyways since the LS1 appeared in 97 but it looks as if that engine was actually still available in 9. Rambling via keyboard but the engine must be the same year or newer than the vehicle.
Lastly, I make no claim to be the all knowing so if anyone knows otherwise for certain please chime in. Thanks!