Have you ever heard the saying ?:Drive it like you own it :You bought it ,so do what you want with it.Improving the motor to a 340 is a great idea,and if that,s what you want go for it!#,s matching cars with correct everything are mostly for shows,which is great,but I like to DRIVE my cars cause I work on them all the time and appreaciate them more.My 2 cents.