My first magnum build, advice appreciated

Summit listed a handheld Diablosport tuner for the 99 truck, but I wouldn't be surprised if its a misprint. Is the sct tuner one I can plug in and have it work? Sounds like Mullinax had issues he had to work out. Ill definitely be adding a cam and springs, and I like that Hughes Efi intake too. Those will be a couple months down the road. Is the stock throttle body capable of doing the job with cam and intake or will I need an aftermarket unit? Thanks again for all the advice. Wish I woulda played with these magnums along time ago so I didn't feel so stupid. Stock lifters are ok to use with new cam as long as theyre in good shape?