It is $495 if your sending your core/pcm in first. Feel free to call me with your vin # handy if you would like to get your order in. 800-417-4559 Jay
https://www.ultrarvproducts.com/UltraPower-GM-Workhorse-7.4L-(454)-Custom-Tuning
If it is a 1998 then yes you can. If you send it to us you avoid paying the core charge. We would reprogram yours and put it in a new case so it looks nice! If you would like to place your order feel free to give me a call at 800-417-4559. My tech who does the programming is out of town this week so it would get done first thing next week if you wanted to go ahead with it.
Jay