Difference between head studs and main studs?

[Jordo C]

Just wondering the difference between head studs and main studs, can they both be put into an fg? Or are they like the same thing 

[arronm]

Just try google it will explain all. One is at the top of the engine other is at the bottom. 

[k31th]

head studs hold the head to the engine block and main studs hold the main caps and subsequently the crank to the bottom of the engine.

[Jordo C]

would it be necessary to get both kits?

[k31th]

no. just get head studs if you're going for bigger power... the main studs are only done when you do bottom-end work; e.g. when you build your engine.