wht valve spring do you guys suggest for the yella terra roller rockers 1.9 ratio and wht are your thought on 1.95 any good or not reliable im leaning toward 1.9 and possible head porting next year thanks
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wht valve spring do you guys suggest for the yella terra roller rockers 1.9 ratio and wht are your thought on 1.95 any good or not reliable im leaning toward 1.9 and possible head porting next year thanks
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