The converter sits between your engine and tranny. You have to pull one or the other to install it. It will help with launching, but it isn't necessary. Something for down the road imo. It has no bearing on the cam.
Of course Intense will recommend their own cam over someone elses.
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'13 Mustang 3.7V6 - MT82
'00 GP SE (L67 Swap, XP, Headers, 3.25")
'98 GTP, '01 Bonne