Few random Q's about 318 and gauge wiring

the tach should have 4 wires. black green white and red. black is ground. white is to your lights. on the left of the steering theres an adjuster that turns. turn all the way to the right and get the click that should be your hookup for that wire. red is hot i splice that in with the white. and finally the green is to the coil -. if you havent done this before get someone else to do it for you. it may be a paint. put one in my S10 and it was a total pain in the ***. and you can get a 4bbl intake from most junkyards. grab the carby too. youl need it. 2 bbls just bog out cuz they suck eggs. 4bbls are more fun. good luck!!