Magnum heads- LA TTI Headers?

Planning magnum swap and I dont want any surprises.. I currently have 340 with TTI step headers and if I go magnum will I be able to use the TTIĀ“s since the LA and Magnum have differences in exhaust ports?? Also, will LA-style Mopar performance valvecovers fit?

Headers will bolt right on. I still had to make a few strategically placed dents in my TTI's to clear steering and both torsion bars. Heated them up nice and red and gently tapped a few dents in them to gain clearance.