If it's just the coil, you can switch it out in about 10 minutes easy with a better aftermarket one(MSD,ACCEL,MALLORY) for about $60.00 tops. Someone could walk you throu it over the phone it's that easy. If you choose to go with an HEI distributor it will come with one built into the cap. Not sure how the Team rush upgrade works but I think it replaces the points inside the dizzy to a HEI style pickup with your existing dizzy.
By the way, you are posting to a "For sale add" and would get alot more info. from the engine forums. If your motor is in a jeep and it's a cj a good site would be www.jeep-cj.com or if it's a full size jeep www.jeepforum.com Those sites get alot more views and are alot more active.
Bulltear is the ultimate experts on all AMC motors but seems more technical as far as internals and have some trick aftermarket stuff.
Thanks for your service and stay safe and come home soon. Good luck. Later, Pete
