The standard valves use shim over bucket and a single spring per valve.
The Carpenter setup converts to the shim under bucket with titanium retainers you have in your kit (the idea is to aid higher rev limit and reduce chances of spitting a shim out due to valve float like you'd get with shim over bucket).
And they used to use dual springs per valve (one inside the other) but changed to a single spring (a different one) a few years ago.
So your kit looks to be a few years old.
You could get Carpenter to do your head job only, since you have the rest of the parts.
The side of the box the pistons come in, and the sheet that comes with them, should tell you what compression ratio they are (e.g. 10.8)