ok sorry if this has been gone over before but i searched and have not been able to find anything.

looking to install a FPR on an S5.

so my understanding is i will have to cut off the factory FPR and weld on a fitting to be able to plumb the new regulator in. correct? suggestions on fittings?

this is all on the return side of the system correct?

FPR with a range of 30-70 PSI will be sufficient? I am on the fence with buying the kit from Flatout, ISC or just piecing it together from Summit Racing or such (not sure if this is even a good option from a financial perspective).

Thanks for the help!