For a lazy guy who used machines for years and is now a weak (albeit jacked) guy
....do you think specialization training is necessary to say bench 400-450 and squat 500 raw?
For this? Some specialization, but nothing truly specialized. Something like old style block periodization would work fine. You're young, and you've got drugs and muscle memory on your side. A few cycles of just moving from the mid - low rep ranges, and getting you use to handling the heavier weights should get you into the quoted range.
Also one more thing...If training for strength is so heavily dependednt no the CNS and plays such a large role in maximal strength, then why are there so many bodybuilders walking around almost as strong as elite powerlifters? we got a couple guys on this very board who have benched 500 raw....isn't that pretty elite? . don't make me post the video of zack kahn benching 575 raw
Drugs, genetics, and heavier body weights, plus a willingness to to work in the lower rep ranges for periods of time. When you look at the pros that are moving heavy weights, their training looks a heck of a lot like early powerlifting training from the 60's - 70's where it alternates between mass building, maintenance, and strength building.
A fast twitch guy, on a couple of grams of party favors, walking around at #275 plus lean pounds, is going to be strong as shit as long as he is willing to push the envelope a bit in terms of progressive overload.
Also the key is almost as strong, but not as strong or beating. Truly specialized stuff works best when you've got weight class athletes where you've tweaked everything you can without moving up a class, and still must eek out gains, or you've got a guy at the top of his game, where you're just trying add a tiny bit here and there by any means.
For the most folks, just progressive overload across different rep ranges, over multiple years should be enough to get them big and strong.