Are those Autolights a colder heat range than stock? I know that colder is recommended, and most recommend the NGK TR6s. That's what I'm running, and they are cheap ($1.79 each).
I'm not familiar with that blower, but if it's like mine, you are going to have to possible relocate the PCV tube that stretches across the engine bay. I got rid of mine and used some 5/8" hose routed behind the motor instead.
I also need several small pieces of 1/8 vacuum hose to splice/extend some of the existing vacuum lines.
New belt? Not sure if this is a separate 8-rib setup or uses the existing serpentine belt (like mine).