A cam change with a hyd roller should be about as simple as it gets since you shouldn't need to change anything other than the cam. Comp has several different shelf cams for BB Mopar. Something like the XR280HR-10 or the next size smaller XR274HR-10 would work. If you want something that really works with your parts then get a custom grind. If it was me I'd spread the lobes out a little bit to 112 or 114 just so it idles better with the FiTech. I'd probably also swap to a Performer RPM. The exhaust manifolds and the FiTech will both work okay with a much smaller cam and a dual plane intake. At that point your existing converter might just be fine.
