Unless you've been playing with the compression ratio and cam etc, it's still exactly the same engine just with a longer stroke and bigger bore......sensors, ignition etc should all be retained.
NGK bpr6ef
It amazes me how many people build a 355 from a 304/308 then believe everything else in the car needs to be high performance spec.
Unless it's super high compression with a hawg ass cam that revs to a million RPM, all the stock gear is fine (the factory 355's in the HSV's ran exactly the same wiring, ignition equipment, fuel pump etc the only thing different was the injectors and the tune)
