can you atleast put the blockhead into gmod?and vehicles/weapons from blockland?...
Gmod only gets content from other source games.
Examples: Half-life 2, Counter-Strike: Source, Team Fortress 2, Portal, Day of Defeat: Source, Half-life: Source, and one other game that I forgot the name of.
Blockland isn't a source game, therefore, not being able to put in gmod.
You could get blockheads and bricks into Garry's mod by modeling and converting.