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TWS head stud kit designed for your 10 bolt or 14 bolt Rover V8 head application.
TWS vs ARP & Stock
These are standard on all TWS Performance Engine Builds.
Installation instructions are here
How to identify 10 bolt vs 14 bolt heads. Generally 14 bolt heads are on older rover V8's 3.5, 3.9 and 4.2 and run a 36cc combustion chamber. 10 Bolts heads, commonly referred to as 28cc heads, are found on 4.0 and 4.6's from the factory.


My new favourite Head Stud Kit bar none.
Worked perfectly !!