Stock 340 springs vs comp 901-16

Hi all, thanks for the input. Sorry i wasn't clear enough earlier. The 901-16 springs are currently installed on 273 that is running and installed in the cuda. My "plan/thoughts" are to remove these parts listed below from running 273 and install them in 340. I have a build thread started and the link for that build is below as well.
Spec for cam lists 0.468 as valve lift. I'm assuming thats max lift? Cam and lifters from Comp (#20-246-4) link below.
Parts from 273
1. Cam n lifters from comp #20-246-4
2. Double roller timing chain from Comp (3103)
3. Retainers from comp #747-16
4. Factory 273 adjustable rockers and push rods.
If I use 901 springs, the heads will have to come off the 273, meaning new head gaskets will be needed (would like to keep 273 as together as possible)Or i could use the rope in bore trick to keep valves up to remove springs.
All the comp parts have approx 8-10,000 miles on them. Cam I picked (270s) is/was too big for 273. I'm contemplating it going in the 340. And yes I plan on getting on it once in a while.
Yeah I'm a little long winded here, sorry. Just trying to explain what my options are.
340 X heads are 69 stock springs and valves, fresh valve job, no rockers
Thanks for advice all.
Links below
You can skip to page 7 on my build thread lol
273 302 318 340 build
Comps link
20-246-4 - Magnum™ Mechanical Flat Tappet Camshafts