A good rule of thumb is that if piece of gear has a stat of a certain number then meldable gear in that slot with the same ilevel can reach that number.

These should be the stat caps for all i90 Body pieces based on what Direwolf/AF2/Allagan bodies have:

Str 29
Dex 29
Vit 33
Int 29
Mind 29
Piety 26

Accuracy 34
Parry 34
Crit Rate 34
Determination 24
Skill Speed 34
Spell Speed 34