Hello
As written in another thread I overhaul my Caterham / CVH Turbo engine. I have already converted the Inlet from MFI to EFI. The plan was to buy an EFI Stage 3 cylinder head from Bruton Power. Unfortunately Burton Power does not have any more in stock and they need an exchange unit.
The problem is Burton can't convert the head from MFI to EFI, so I'm looking for an EFI head.
But it is very difficult to get an overview. My current head is an MFI hemi chamber 88SM6090. As I've read there are no significant differences between turbo and non turbo heads.
I've read that the 89SM6090 is an
EFi hemi head. But I've seen a lean brun at this number, so I'm insecure. Furthermore, it is very difficult to get one.
Maybe I'm lucky and someone in the forum can sell me one 
I would be very grateful for tips which others would fit.
For example, what is the difference between the 89SM6090 and this one here on ebay:
https://www.ebay.co.uk/itm/323331921995?ul_noapp=true
best regards
Stefan