i wanted to put a type-r head on my 99 ls but my friend said there isn't much all that big of a diffrence than gsr head except for the cam and springs or something. he said u can get the gsr head and put the type-r cams and and some nice valves and it will be pretty much the same thing. is that really true and how much would a type-r head cost compared to the gsr. thanks

 

type R head also is ported and polished...

 

The ITR head features:
Lightened and necked intake valves for higher RPM and better flow
Better lost motion assemblies
Better Intake valve springs
Exhaust valve springs are the same as the GSR intake valve springs
Larger combustion chamber than GSR
Factory port and polish at the valve seats
The castings for the ITR heads are also hand selected for minimal core shift. You are getting a top quality products with the ITR head.

Here are some pictures of one that I sold.

https://honda-tech.com/zerothread?id=1493391

 

Combustion Chamber Volume in the type r =42.70cc
and gsr 41.60
GSR will increase your cr a little