if buy the 272 hks cams do i have to change anything can i just slap them on and thats it

 

its always nice to upgrade springs and retainers as well...

 

if i have the money yes , but do i really have to

 

No, you don't have to at all.

 

No you dont have to. I ran them for 30k+ perfect.

 

you might want to do a timing belt tensioner and water pump when your installing your cams. depends on the mileage of the motor..

either the HKS 272s or our S1 camshafts do not require springs and retainers at near stock rev limits.

 

i have my HKS 272's running all the way up to 8100 rpm on stock springs. It'll be perfectly fine