I'm thinking that was a smart @$$ answer - I've found some answers on the great internet but really looking for something more definitive from folks that have swapped the LS style engine into the 1st gen... Tons of swap info out there, just little on using the other GEN III small blocks into the 1st gen that I can find - maybe Mkelcy knows something more than I do where there is a good writeup for an LQ4 or LQ9 engine with a manual trans into the 1st gen...
I did a search on "LQ4" on this site and got 31 threads in response, a search on "LQ9" on this site got 56 threads and "L92" on this site returned 57 threads. One of them was entitled "LSX Swap thread info on how to do swaps and parts needed
Yes, it was a smarta$$ answer, because the question seems to suggest that your time is too valuable to do something as mundane as searching and trying to learn as much as you can on your own, better to use up the time of folks here (who searched and learned on their own) to type out information readily available to you with just a little effort.
There is a lot of information on these swaps here, on Pro-touring.com, on Lateral-G.net and Ls1tech.com's Conversions and Hybrids forum. If your question is "Are there physical external differences between an LQ9 or LQ4 and an LS1?" for example, while still readily available, that's at least a short, easy answer. "Not dimensionally for the block, the blocks are iron instead of aluminum; yes for the intakes - but that may not matter."
In other words, if you put out some effort, folks here (as I have on many occasions
) will be happy to help; put out zero effort and expect to be spoon fed, and you'll get less useful replies, at least from me.