HEI upgrade?

Im not very good with electronics. Can you find the links to the instructions you used? heres what I had found

http://duster318.freeservers.com/tech/hei.html

http://www.slantsix.org/forum/viewtopic.php?t=15779

its really just the way they were written...I have enough stuff to build about 20 of these but I cant quite comprehend what Im supposed to do...Sorry if Im being difficult but Im really interested in this