my e28

hi, i'm a total bmw freak, everything bmw, finnally, last year, when i was 16, i saved up enough and bought a hi mileage 528e, 1985, i know, i couldve done better, but i just liked the way it looked, so far ive not done much, lowered it, reconditioned the interior, rare german front lip, im thinking about getting some borbet A's and doing that stretched tire look, and rolling the fenders, but thats not my problem, its the power, right now its got 188k on the odometer, and i the m20 +automatic trans=BORING, so im thinking about putting in a later model m30 3.5liter+5-speed manual, or maybe a v8 of sorts, any other suggestions??, ill post pics soon