My stack is like $320ish. Main villains is close to same. He is utg Reads on villain are as follows played every hand for almost 2 hours never folded pre period, no exception here. Also he bets a lot and very aggressively.
Bunch of limpers to me otb I look at AA. I make it $21. Sb calls. Utg calls all others fold.
Flop J53. 2 diamonds. Sb checks. Utg pauses, looks at me then his chips and pushes out a bet of $42. I cut out $42 for the call while watching sb, who looks totally disinterested, then check out utg. I elect to raise $90 on top making it $132 to go. I throw it in double fisted and confidently. Sb folds. Utg insta shoves. I?
Also, please tell me if my bet sizing is good.

preflop, fine...raise on flop, fine. call his insta shove =super fine. played perfectly,if we called...

NH, WP. Now call.

This is not some kind of fist pump, high five yourself great spot. But agaisnt aggressive players you sometimes have high variance. From your description he'll have plenty draws in his donk/3bet range and we have a significant edge on almost all of them. Obviously sometimes he's got us beaten but we have some equity against all 2 pair combos.

Agreed, I think you could even see J9s if he's super aggro. J5/J3 are out for limp-call a 10x raise UTG, unless V is so crazy that ranging is pointless, which leaves combos of 53s (probably no 53o as it's in the same camp as J5/53 utg, but we all know everyone likes to limp low suited one-gappers if they ever watched HSP lol). I gave V half the combos of 46 as that's really the only draw I see pushing unless the board was double-suited.

Board: Jh 5c 3d
Dead:

equity win tie pots won pots tied
Hand 0: 72.694% 72.62% 00.07% 284706 285.00
{ AA }

Hand 1: 27.306% 27.23% 00.07% 106764 285.00
{ 55, 33, AJs, KJs, QJs, J9s+, 64s, 53s, AJo, KJo, QJo, J9o+ }

Looks like a fist-pump to me.

You forgot flush draws and probably included too many 1 pair hands. OP said aggro, I'm guessing if he was literally just spazz shoving any top pair all night OP wouldn't have posted.