LS3 Heads

[S800VXR]

Prob one for Mr R who is MIA currently (by the way why?) but is it worth gas flowing these when the engines in bits and if so who can do it in the UK?

[S800VXR]

That looks a bargain, are the valve springs any good or is it wise to put your own in to suit the cam or can you advise them what to add?

[S800VXR]

Could always do both...