the measurement is taken where the 2 halves of the inlet split apart
Bits you should buy:
Inlet manifold gasket
4x zaust manifold gaskets (they come seperate)
8x Copper zaust manifold nuts
Some zust manifold studs depending if any shear/come out with the nuts
Timing belt & tensioner (matched to whatever block you are using)
Solid rubber 16v/G60 rear mount (stronger)
Synta Silver oil & quality oil filter
Clutch kit
Gearbox input shaft seal, push rod bush & seal
Recommended bits:
Solid rubber 1.3/16v gearbox & front engine mounts
New alternator/pas etc belts
New metal coolant pipe
Thermostat & seal
Spark plugs, rotor arm & dizzy cap, air & fuel filters etc
Rubber cam cover gasket kit
Plastic coolant flanges that attach to the head
Redline MTL gearbox oil
Gearbox release bearing & end cap