I took my car to the shop cause of valve problems. They tell me that I have one of the sought after e88 with combustion chambers liked the e88. They want 250 for a completely rebuilt e31(ported, polished, and exhaust widened and inch or something to that effect) and they want my e88. They explained to me that on the street someone would not notice the difference in the heads but on the track where a motor is tuned very precisly they would know the difference cause they race spec class cars here in the southeast. Are they trying to sucker me or what? They want 1000 to rebuild the head on my e88 they say all of the valves seats are worn out and thats how much the machine shop wants to fix it. Am I being thrown a screwball or what? Please help me here Im leaning towards the e31 cause of the money factor. If not it will cost me 1700 dollars just for a head rebuilt of i go their way it will cost me about 900. Laterzz Mark