I'll give it a whirl. 4=Buick 34=GS 37=2dr. hardtop 166= Saddle interior with bucket seats 49=Verdemist green lower body paint G=dark green vinyl roof
02E = Built the 5th week of Feb 1971 (Maybe a leap year or they counted the 1st day a week if the 1st of the month started on a Friday)
Yeah I thought that it was a leap year also Jim,but that happened in 1972.I just looked at a 1971 calendar on the web,and the 28th was a Sunday which was the only day of the 5th week.Thanks.