I have a fuel management system by blue chip diesel and a powerpuck by diablosport that i need to sell. they work great together and only have approximately 1000 miles on them. Ive tried every combination when it comes to boxes on a 1998 1/2 to 2002 and this combo worked the best. I had a 99 qclb that had custom twins and custom injectors and a big vp44 with these boxes and it was a great running truck. I no longer have the truck and need to sell. Im asking 500 for both of them.