small block heads for a long distance cruiser

Are the 308 swirl port heads small port heads? Some of you guys have me thinking about a 318. If you use 308s they originally went on a 318, right? What kind of pistons would you need to get decent compression with them??? Would all the 318 rockers, pushrods and shafts work? Does someone sell rebuilt 308 heads?
It's a 360 head, same port as a j head, pretty much. Better exhaust port.
302 is the 318 head with the pointy heart shaped chamber, those are garbage without a lot of work.
308 is a good head if it hasn't been jacked with.
If you look at prices...it looks kinda like this...
Valve gear, $98.00 21-4n 11/32 +.100 2.02/1.60 valves . comp995 double, super locks, retainers 234.00
400-500 to machine it and put it all together
250.00 to blend the bowls.
Probably end up with a 235-240 cfm head by .450-500 lift.
1000.00-1200.00
Or you buy cheaper valve gear, elgin spring kit etc and save a little.
Someone who has recently bought ready to run eq heads should chime in on cost.
I'm guessing within a few hundred more,

It's just money.