1990 chevy s10 blazer
 

We are attempting to fix up a 1990 chevy s10 blazer 4.3l v6 4wd, replaced intake manifold gasket as well as a new distributor. Not certain on firing order or timing specs/procedure, so what needs to be done in order to start it? Here's the VIN number - 1GNCT18Z5L0114066 Thanks for any help!