Re: What To Do?
If the engines in reasonable condition, then go for a cam change. Something that suits your transmission and cyl heads. A cam and lifter change will give you a definate lift in performance and add some lope to your idle.
You will need to check cam specs with a few cam manufacturers to keep things working as a unit.
Good experience for you as well, take your time dialling it in.
Plenty of people here will help you if you need advice on how to go about it.