Tune up....? Does it all look good?

If I remember right the engine should be red, blue is later model so eng isn't original . did the engine have 5/8 head spark plugs ? or 13/16 could be a 198 but not a 170 they were all red I think
The engine in the car is red and the original motor the one in the stand came out of a 70s and that one is blue my plan was restore the car and the motor that's in it keep stock rebuild it stock and the one on the stand go crazy try to get as much horsepower out of it as possible was even thinking twin turbo for the motor that's on the stand