the book says there's an engine casting number on the left side of the cylinder block, under the manifold. but i haven't found a site to plug it into yet. you can email me the number and i'll call the dealer monday.
2L should be 77-85. rockers, no shims. the valves are set the same for a 2L or 2L T. T just means turbo. you have a 2L. you just got the reinforced gasket for a turbo.
hot
in 0.25mm/0.0098in
ex 0.36mm/0.0142
i have a dl pg for toy truck FSM for the 2L here,
http://www.ncttora.com/fsm/1985/l_2l...air_manual.pdf
valve lash and fuel timing is on pg 23.
cheers!