I just found out about spider injection. Looks easier and cleaner to install etc. What about that vs stock fuel rail/injector system?

 

Here you are again.
The center point system is a constant flow thru all 8 nozzles (NOT true injectors) and is a very crude system, really not much better than a carb.
GM did not use it very long or in very many vehicles.
You want precise metering, use an actual sequential (timed to each injector) fuel injection system.
Or if you don't like it this complicated, get a carburetor

 

I didnt know---had never even heard of it before today. Thanks