Hi,i recently bought this 1976 Fi Glass Warrior,with a GM 140hp 4 cyl inline motor.the engine number is FO91660 and it has the two barrel Rochester carb with the two idle mixture screws.on the ali rocker cover it says 140.Im trying to establish the actual cubic inch and year and designation.Is it the 3.0 litre or 140hp 181CI[181 is 3.0 litre]I cant find an actual serial number anywhere.only number similar is cast into the RHS block near the starter which reads 3849449 then H264,but i always thought they were just cast numbers ie nothing to do with identification.it has raw water system,points dizzy[which ive just updated to electronic] and normal water pump.with the new electronic distributor,would it now be the 3.0 litre LX the whole motor is similar to the 4 cylinder Holden motor that we used to have in NZ