Charma Automobiles Engine Build Challenge!

Ok so I like making my own history up for my car company, and as we all know sooner or later problems always happen so what I am doing is in 1996 Charma will face a strike where their engine plant feels that they are not being paid enough for their effects considering how successful Charma had recently grown. With this being said Charma has to look to new companies to keep their beloved Hydra from facing extinction!
The Challenge Requirements are as followed
year 1996
No limit on man hours So have fun with the tech!
Engine must be INLINE 6
must use a dohc
and valve covers must be orange as is Charma history and tradition
produce over 300hp but not exceeding 430hp
engine can be either na or turboed
car must run smoothly and get min of 20 mpg
keep in mind this is a performance engine
no race intake
tubular and long tube headers are ok but no race headers
and it needs to have a mtbf of arond 70-100k
Now lets see some engines
The Challenge Requirements are as followed
year 1996
No limit on man hours So have fun with the tech!
Engine must be INLINE 6
must use a dohc
and valve covers must be orange as is Charma history and tradition
produce over 300hp but not exceeding 430hp
engine can be either na or turboed
car must run smoothly and get min of 20 mpg
keep in mind this is a performance engine
no race intake
tubular and long tube headers are ok but no race headers
and it needs to have a mtbf of arond 70-100k
Now lets see some engines
