You can see my swap, have link in my signature. LQ4 in a 64 4 door, budget build, worked with what I could. I went the HARD route and used a cheaper fbody pan, had to notch the crossmember to clear everything and still don't have the greatest driveline angle.
As mentioned above, if you can swing it, Holley did the homework for you.
When setting everything up you need to keep the vehicle weight on the front suspension. Do not place the jackstands on the frame by the door hinges. Our frames aren't strong and the front will sag giving you bad results when you take the car off the stands.
Best of luck, start a build thread, there's plenty of knowledge here and you'll get the help needed to get it done.