inlet 'o' rings

[Jam TVR]

Car was running a bit rough latley and took it down the local garage, he said its drawing air in throu the 'o' rings on one inlet manufold.
i have the 4.2, is it the same 'o' rings on all the v8's?
and where could i source these from?
i have tried Christopher Neil and they dont stock them on the shelf.

Any help would be great, cheers.

oh and has anyone els come accross this befor?

[therevday]

You can get them from TVR power.02476366177 I can't remember how much they are but it won't be a lot.I purchased every seal in the engine and it wasn't the end of the world!