I'm only 17 but cars are my life. I currently drive a 1966 Chevy II Nova (engine swap, hurst wide handle shift, custom exaust, gauges, lowered, susp, the whole 9 yards, getting about 300whp, no power steering

) But I really would love a European sportscar. I have looked at Audi S4's but I am really looking into the E36 BMW M3 as a serious purchase for a summer project. So far the only one I have looked at was a 1995 with just under 80k for 12,000 US Dollars. I came here hoping to get help and insight along the way, and I'm really just looking to expand my knowledge base because I know nothing about euro cars. What should I know before I purchase one?