I just checked that ebay link. That is the so called 2 piece HEI where the coil is a separate unit from the cap. It is a non computerised unit. Some guys prefer them over the all in one HEI with coil-in-cap. For street use I doubt you'd ever care one way or the other performance wise except in my opinion the all in one HEI is a cleaner looking package on a well dressed engine.
Didn't mean to double post separate responses. Just overlooked the ebay link in your original post.
