Agreed!! Way Too Little Room And Room For Error...Youll Definitely Want The Motor Out To Do A Job Like That. The Front Cover Must Be Removed To Get The Heads Off And Theres Very Little Room To Do So Without Pulling It All Out...But If Youre Interested Ive Got A Set Of ST220 Valve Springs That I Will Not Be Using.

CSVT E0 3L 14.5 @ 94mph, Stock Intake, Stock Exhaust minus Resonator, CEL, And Broken Pass. Side CV...Untuned.