Is there a lot of difference between the two? and could you use a FRST head on a RS T bottom end and vica versa?

just curious really

 

Block has the hole for the CPS
Head is different on inlet side to allow injectors to sit right
Think there is difference with the oil return from th eturbo but not 100% sure there.

Don't think there is much more than that though

 

cool cheers

 

my series 2 has a frst bottom end fitted

 

eeeeerr, dont think the FRST had a oil feed/return as it's water cooled!? could be wrong tho, the head's are different sumhow im sure also? again, maybe wrong

 

both water cooled and oil lubricated turbo's on frst and erst, the frst one uses efi so sensors and stuff will be different

 

oh yea im a dunce i forgot cos my S1's not water cooled