I bought the carrier, NOT the complete unit, and the carrier DID NOT fit the S1 base shown above.

Hoever, if the whole thing shown above was purchased, then there is a very good chance it would fit. You will need to speak to them to double check, also, make sure the S1 fuel pump afits inside, are they a narrower pump on the S2??

How recked is your base mate, the bit with th rubber attached??? if this is ok, clean it up and spray it, then look at making or having the arched carrier fabricated.