Series 2 Core plug help!

Hi.
Can anyone help me source x4 core plugs for a 2.25 petrol. 1968 F plate.
The 4th has rotted through and the 3rd is on the way out.
Based in Scotland and I’m trying to get them by Monday evening.
Gemm 4x4 thought they had some but later phoned back to say they were the wrong size.
Inside diameter is 24mm and external is 27.3 ish. These are measurements from the old one taken from engine.
Thanks!

Have a look at turners web site they deliver quite quickly and if you call them with engine number they will confirm correct parts.
https://www.turnerengineering.co.uk/PBSCCatalog.asp

Found them about 10 mins ago! I’ll give them a call. Cheers