I like the later coil in cap 250 I6 HEI distributor but one can use the early HEI with a remote mounted coil which looks less modified. If one clamps the bottom of the distributor in the lathe chuck and have the top centered on the tail stock it takes less than five minutes to turn of the factory hold down flange. Next step is use the Speedway hold down clamp #91044030 ($9) and adjust shaft into oil pump depth AND MARK. With the GM HEI the parts stores will have or can get by the next day any part you need and much cheaper than ones you have to wait a week for. Don't worry about the GM HEI needing any parts for at least 100k miles.
