In Reply to: Re: 5xxiT posted by Dana White on March 23, 1999 at 22:22:01:
I talked to steve dinan about this for my 525iT at the thunderhill drivers school. Part of the big money is the firewall is different. Apperently there's a 'box section' that is replaceable, it's about 3 days labor, and he said the parts (off the top of his head) would be 3-4k even used. Really though, use the manual mode if you go to the track, and you have decent control. I have heard of someone doing a 540- 6 speed conversion, cost about 35k.