D100 360 Build Advice

Thank you sir. When I spoke to Comp, the tech guy said to go with the XE250 and that the stock 360 cam was in the 180's @.050". I've since learned that you're right, the stock cam was the same as stock 340 AT cams- .429/.444. It's amazing how misinformed some of the tech guys are for these auto parts manufactures.
If you truly have the .429/.444 cam, that is the one of the best cams for your application. That cam has tons of potential. It works great in 273's - 360's. Low end torque and will pull up to 6k with headers and 4bbl.
do what ya want, but I'd put new lifters with that cam (providing it was in excellent shape) and use it.