I remember I've seen one setup that didn't requrie a laptop but I can't remember the brand name. It may of been haltech, or electromotive.... not sure. It provided a small keypad with display on it that you could adjust all parameters with, but this was meant only for small modifications, not setting the basemap. I recall that it explicitly recomended to use a laptop for inital settings and to get everything stable.
Other then clifford (www.cliffordperformance.com) I don't know of a setup thats bolt in (although I believe their setup will only be considerd bolt in if you have their 4 barrel manifold as well). There are plenty of people that make aftermarket kits based on GM parts. You can get by with one adapter but you would need to drill at least 4 holes in it.... Check out http://www.customefis.com/ and www.howellefi.com Howell sells a 2 barrel or 4 barrel holley to gm throttle body adapter, and then you can use a mr gasket adapter to take your single barrel or supersix intake to one of the above adapters.
The people that sell the GM systems "customize" the computer to your engine. What that means is they burn proms tailored to your engine. While this may get the engine running it will deffinately need some tuning, and the only way to tune it would be burning a new chip. So you can either call the people back up and they guess at what needs to be changed, or you can buy your own prom programmer and burn your own chips. But since you said you don't want to use a laptop to tune I don't think you want ot use a regular pc either.... I bought one of these "customized" kits, and after 6 chips my engine is running decently but still not very good.
If you want to go multiport then you will have to have custom machine work done to the manifold which will get pricy. Check out http://www.rancefi.com/ to get some ideas. Rance can provide a complete kit for you but it sure will not be cheap, you are looking at $2-3k with the machine work.
Just curious, why don't you want to use a laptop? There really is no plug and play, it will take some time to install, run the fuel lines and wiring, and patience to tune regardless of what kit you get. Don't let the appeal of the kits being complete illude you, they will still take quite a bit of work to get up and running.
Although this is the complete opposite of bolt in, this page may give you some good ideas and has good info to look at. Lots of people had success with this do it yourself computer, and would probably be the cheapest solution if you piece together the rest of the system from junkyard parts. http://www.bgsoflex.com/megasquirt.html
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