Sorry guys I wasn't clear enough.
As far as the basic set-up is concerned it is ALL KIT PARTS!!!
The reference to the longer eyelets was to go with the revised towers I have designed. The reasoning is to give maximum uptravel without loosing any droop capability. When I was going to PDA a lot the one place I couldn't push as hard as the B44s for example was on the landings that led straight into a corner ... the new towers and longer eyelets sort that out a treat!!
I know only a very few tracks need that but it's always good to have it in hand and doesn't hurt the car the rest of the time anyway ... and you can always use external limiters if you want to reduce uptravel.