WoW! 
335 hp engines usually got the HP exhaust manifolds, while the 330 hp engines usually got logs like the 2bbls.
'68-'70
both 330hp & 335hp received the dual exhaust manifolds which are commonly & incorrectly referred to as HP manifolds383 2bbl engines received the "log" single exhaust manifolds (only on RH for '70)
My '68 Superbee still has its "born with" 330 horse motor. Many '68 bees were actually 330 horse, by '69 the 335 was standard. This is verified on the trim tag as an engine code of 62 (330 HP) vice 63 (335HP). .....
335hp was STANDARD on '68 & '69 Super Bee
& the only '68 Super Bees with the 330hp engine are also equipped with A/C
