I will try that mod after I try a few of the version 1.0 saves with a downgraded "exe" file.
Also, the message you left me about the Version 2.0 files on GTAforums was a big help, there was a PLUS in it, that I don't know if the person who did it even knows about. In Save #93 of the Version 2.0 saves, I ran it, while in the game, I had CJ go over to Big Smokes Crack place, of course the entrance had been smashed in, I noticed that there was a blueish floor and not the regular one that had been there in the many times I had played End Of The Line. I had CJ walk in, and he fell through! It is an open doorway to the "Underworld." Well, the next time, I used the Rocket Pack cheat, CJ went in, and flew all around, finally went over to the Gym by the Johnson House, landed in the black box with the door, since it was solid, had him take off the rocket pack, he walked through the door, and he came out INSIDE the gym. Well, I had him walk through the door again, and he came out - outside on the sidewalk. Haven't done much more because, been playing around with the flying as you know. Try this out, see what you think.
Using the above "save" file, had CJ start out with no cheats at all, he went to the airport and got the jetpack, then went back to Smokes Crack place, and entered the "Underworld." He then proceeded to shoot cops and Ballas, had to get real close to the street surface from underneath, then his MiniMG worked fine. Well, got him up to SIX STARS, and then went back to the opening at Smoke's Crack place, teased the cops by staying back just far enough so they could see him, and they would drop into the Underworld (are you paying attention Clansman
just like Lemmings, by the dozens
A tank tipped into it, but was still part way onto the sidewalk, so didn't fall. You have to buy a lot of ammuniation, and fatten CJ up some because, it kind of tough to get out with all them folks shooting at CJ, but it can be done. Try it.