Cam an Valve Train ? 264 Vs 272

[SR-S14Slidin]

I had a question my SR Has the springs an retainers I got from my set of cams (Brian Crower 264's came with springs an retainers which are now In my motor.) I was wondering If im able to put 272 cams in with the "stage 2" valve train. Im not sure if anyone has ever tried this.

[SR-S14Slidin]

Also as far as when I did the research I only found one spring an retainer set for a s13 sr20det. I wasn't sure if I can rock stock valves either

[Pinggg]

Bc only has one type of springs and retainers for all sr20 application.